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List 3 things you notice from this article.

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List 3 things you notice from this article.

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Write a one paragraph synthesis of what  you learned from both articles.  Develop a point of view and include 2 quotes.  Must have 9 detailed sentences minimum. I want you to write yourself not have AI do it.

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Transcript: https://www.sciencefriday.com/segments/new-world-screwworm-flies/#segment-transcript

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How Millions Of Flies Can Help Stop The New World Screwworm

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The New World Screwworm is creeping north, threatening cattle in Mexico and the US. Fighting flies with flies has worked before.

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Audio: How Millions Of Flies Can Help Stop The New World Screwworm

https://podcasts.apple.com/us/podcast/how-millions-of-flies-can-help-stop-the-new-world-screwworm/id73329284?i=1000718445545

You can listen to this or just read the audio transcript (next column).

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This quote is directly from the article.  Find one sentence that meant something to you.  Use quotation marks.

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This quote is directly from the article.  Find one sentence that meant something to you.  Use quotation marks.

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1. The reason as to why scientists are trying to eradicate the pest is due to teh fact that it mainly affects cattle, which is a huge industry in the US.

2. The pest can also afffect other warm-blooded animals and can even affect humans aswell

3. The scientists grow the flies in labs to examine them and understand them and to see what best kills them.

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"We just want people to be aware, to understand its importance and the significance and the reason why we need to keep it out of the United States."

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1. A species of fly has been moving to South America, and people are worried that it might cross the boarder and go into Texas.

2. The fly lays eggs in the wounds of animals and then it eats them from the inside out.

3. The flies lay their eggs in warm-blooded animals, which includes humans.

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1. Screwworms are insanely dangerous and their method of harming people/animals is laying eggs in open wounds and the larvae eat the animal from the inside out.

2. Scientists came up with a strategy on how to stop the fly, they drop millions of male bugs out of airplanes which are sterilized by radiation in order to make them not reproduce and crash the population since the females can only mate once.

3. Screwworms were eradicated in the U.S. but are coming up north from South America and Central America and Mexico.

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1. Screwworms are dangerous to animals and sometimes humans, their method of harming them is to lay eggs in open wounds, then the larvae eat them from the inside out.

2. Screwworms were eradicated in the U.S in the 70's but are coming up north from South America to Central America and Mexico.

3. Scientists came up with a solution for screwworms, millions of male flies who are sterilized are dropped out of airplanes in order to make it impossible to reproduce and crash the population since the female population can only reproduce once.

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1. I wonder what would happen if the pest took over the livestock industry. How would our country look.

2. I wonder what the ultimate solution for the pest's spreading will be

3. I wonder who is spreading conspiracy theories about the pests and what their intentions behind them are.

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"And again, it’s just lack of education. And most folks don’t anything about it. I mean, I didn’t learn about it until I was in grad school to be an entomologist. So it is kind of like out of a sci-fi movie because it’s such a freaky insect that you think, this can’t be real. But it is real."

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I noticed that there was an outbreak of the New World screwworm fly, which was eradicated from the US in '70s.

The way this fly eats its victims will start from the inside out and would lay their eggs in the wounds of animals.

The scientists tried to come up with strategies to stop the fly by doing control pests and dropping millions of bugs out of airplanes because these dangerous flies affect the industries greatly especially the agricultural sector.

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New World Screwworm’s Threat Grows: Pest Detected Only 700 Miles From the U.S. Border

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NCBA applauds Secretary of Agriculture Brooke Rollins’ aggressive efforts to suspend Mexican cattle, horse and bison imports, saying Mexico’s corruption and mismanagement has caused the pest to spread closer to the U.S.

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1. These flies that are impacting cattle can also impact dogs and cats.

2. The fly lays eggs in the wounds of animals and slowly eats its victims from the inside out.

3. If these flies keep on spreading there will be a huge impact to our industries.

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1. I wonder why the flies started to lay eggs in animal wounds in the first place.

2. I wonder how much longer the flies will be a problem to the livestock industry.

3. I wonder if people would die if the flies decided to lay eggs in their wounds.

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1.They can lay larvae in most warm blooded animals including humans.

2.In 1966 the US eradicated past screwworms.

3.Flies were and are put into a radiation program which would only make them sterile, then released into the wild.

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1. There are pests slowly eating animals from the insides out

2. These pests that have been eradicated from the U.S decades ago but are resurfacing in the north of South America and Mexico. Texas borders are at risk of inhabiting these pests.

3. Humans are at risk of these pests as well since they don't only target animals

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"Once they’ve figured out proper ways to grow them in large numbers, they then had to figure out a way to, of course, control them in large numbers. And the way that they came up with this fly was with a radiation program. So when they hit the pupa stage, they radiate them with the processes. And they’ve changed the procedure of the radiation since the 1930s till now."

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1. I noticed that these flies will lay there eggs in all warm blooded animals even humans and will eat you from the inside if you have a open wound.

2. There are only 2 species of this kind in the world and are a huge threat because they can attack anyone.

3. They were discovered in the mid 1800's and scientists started working on how to manage these flies in the 1930's.

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Mexico screwworm case triggers US emergency response

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U.S. veterinarians along the U.S.-Mexico border are being encouraged to look for signs of possible New World screwworm infestation in their patients after the flesh-eating larvae was discovered in a cow in southern Mexico.

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"I think it’s important that people do some research, look it up, and realize that this is a real insect. We do target talking to livestock folks, because we know people who own cattle and other livestock are going to be impacted."

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"Yeah, and that’s what happens, right? We do so good, and we clear things up. But then we forget to talk about them in the future. And then people forget what they are. And I know that right now, education is definitely a very important tool that we can use to our effects, because we need to tell people what this thing does and have them prepared."

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"We do so good, and we clear things up. But then we forget to talk about them in the future. And then people forget what they are. And I know that right now, education is definitely a very important tool that we can use to our effects, because we need to tell people what this thing does and have them prepared."

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"But it's not usual that we try to eradicate these pests completely.And this is one of those that we felt just had to be eradicated to basically better the world, so to speak."

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"Movement through the Darién Gap has also been noted as a concern. And this is both movement of people, and people and animals, and probably lack of knowledge, in addition to probably some lack of surveillance. But as you bring people through an area that may not be aware of an impact of a pest, and they’re not teaching them about that pest, obviously you have a lack of education."

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1. Screwworms were previously eradicated from the U.S. in the '70s, but are now moving north from South America into Central America and Mexico, bringing concerns that it may return to the states.

2. The flies need to be eradicated again as they will impact industries. Because they harm animals, like cattle, it will harm the cattle industry in the United States and harm the livestock. It not only includes cattle but all warm-blooded animals, even dog and cats.

3. Though these flies were being managed in Panama for 33 years, they have been releasing these deadly insects from planes and release them in an area where there is a confirmed infestation, or an animal has a larva present in that specific area.

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USDA Secretary announces large federal investment, new South Texas facility to combat New World screwworm

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Gov. Greg Abbott was joined by U.S. Secretary of Agriculture Brooke Rollins at the Texas Capitol where Rollins announced the federal government’s plan to spend up to $850 million to prevent the New World screwworm’s arrival in the United States.

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"So we just want people to be aware, to understand its importance and the significance and the reason why we need to keep it out of the United States."

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1. Screwworm was 'eradicated' in the 70s in the United States, so its comeback is concerning

2. The reason why we don't like them is because they lay eggs in the wounds of animals and their young eat them slowly from the inside

3. Screwworms lay eggs in warm blooded animals, which includes dogs, cats, and us too.

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I wonder how the flies will be eradicated again.

I wonder if there is a specific victim they are looking for.

I wonder how exactly they came back again to the United States.

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1. I wonder how we can fully eliminate them in a safe manner?

2. I wonder what would happen if they do take over the livestock and how it would effect us.

3. I wonder what happens if they lay eggs in humans?

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1. I wonder how long it took scientists to be able to grow the flies from inside a laboratory.

2. I wonder if the sterilized male technique would still work if an outbreak occurred and how well it would do against the spread.

3. I wonder if the sterilized males only go for screwworms or if they also interact with other insect species.

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1. I wonder what makes the flies lay eggs in open wounds.

2. I wonder if climate change is a reason why they are coming up north.

3. I wonder how long it took scientists to grow flies from a laboratory.

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"They come in, they clean up a carcass, which is a disgusting thing to think about. But somebody’s got to do it. So we’re happy they’re there and want to do that for us."

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1. Why and how did this fly find out it can just lay eggs in animals so they don't have to take care of their young?

2. Why don't they mate with other species?

3. If we can just get rid of them without impact to the ecosystem, are there any other pests that could have similar risk?

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A ranch worker drives cattle to a corral for inspection for New World screwworm at a ranch in Cintalapa, Chiapas, Mexico, Wednesday, July 23, 2025, amid an infestation that led the U.S. to suspend cattle imports over fears the pest could reach the border. (AP Photo/Isabel Mateos)

AUSTIN, Texas ( NewsNation) - Texas Governor Greg Abbott on Friday to laid out the state's "plans to fight back against threats posed by the New World screwworm."

According to the U.S. Department of Agriculture, New World screwworms are an invasive species that burrow fly larvae into fresh wounds of living animals like livestock, pets and occasionally people. The damage they cause can be deadly.

Abbott warned the screwworm has the potential the "crush" the state's cattle industry.

"This is an enormous challenge and you need to understand the magnitude," said Abbott. "Just in Texas, this can result in billions of dollars of losses a year."

The animal is named after their feeding behavior, with the larvae screwing into the flesh of their victims.

According to Peyton Schuman, senior director of government relations for the Texas and Southwestern Cattle Raisers Association, a screwworm outbreak could cost Texas around $1.8 billion in damages to livestock annually.

U.S. Sen. John Cornyn, R-Texas, says the screwworm flies could devastate the state's cattle industry if they cross onto U.S. soil.

"A case of the New World screwworm was reported less than 400 miles south of the U.S.-Mexico border," Cornyn told colleagues Monday on the Senate floor. "It may soon come across the border and lead to an outbreak in our state."

The species originates in Cuba, Haiti, the Dominican Republic and some countries in South America. The pests were eradicated in the U.S. in the 1960s, but they have occasionally reemerged in Central America and Mexico.

Signs of an animal infested with the New World screwworm include:

Foul-smelling wounds with maggots

Animals biting or licking their wounds

Lesions in bellybuttons, ears and where branding has occurred

Lethargy

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Texas Gov. Abbott addresses growing screwworm threat

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Texas Governor Greg Abbott will host a news conference Friday to address "plans to fight back against threats posed by the New World screwworm."

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Screwworms are not fun. Not only are they flies, which are inherently gross, but they like "laying eggs in the wounds of animals". I wouldn't want to get a scab one day and the next I have about 900 flies growing inside me. Thankfully, they have absolutely no impact to the environment. "These insects, particularly, are not playing a viable role in any ecosystems, so taking them out doesn’t impact anything else. And it actually saves the lives of animals and saves the lives of humans". So not only do they lay eggs in wounded animals, but they're also insignificant to their ecosystems. Getting rid of them not only a favor to our farmers and their livestock, but also to the ecosystems they impact.

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1. I wonder what would happen if humans got infected by the flies.

2. I wonder what would happen to our country if they effect our livestock.

3. I wonder how these flies started to exist.

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS). This announcement builds upon USDA's five-pronged plan issued in June to combat the northward spread of NWS from Mexico into the United States.

NWS is a devastating pest. When NWS fly larvae (maggots) burrow into the flesh of a living animal, they cause serious, often deadly damage to the animal. NWS can infest livestock, pets, wildlife, occasionally birds, and in rare cases, people. It is not only a threat to our ranching community - but it is a threat to our food supply and our national security.

While USDA is coordinating efforts to combat NWS, it will require continued collaboration between Federal agencies, State governments, and the private sector. That is why USDA is working alongside the U.S. Food and Drug Administration to encourage animal drug development and prioritize approvals for prevention and treatment of the pest, the U.S. Environmental Protection Agency and the U.S. Department of Energy on new innovations to enhance our ability to combat the pest with technologies, and the U.S. Customs and Border Protection to protect the United States border. The United States government will also work alongside Governors, State Agriculture Commissioners, State veterinarians, and others to combat this pest.

As part of this comprehensive approach, USDA is taking the following immediate actions:
1.) Innovate Our Way to Eradication
While sterile flies are currently the most effective way to prevent the spread of NWS, technology continues to evolve and as such USDA will provide up to $100 million to invest in viable innovations which could show rapid advancement of promising technologies that will augment the United States facility and accelerate the pace of sterile fly production if proven successful. USDA will support proven concepts that only require funding to scale and implement as well as a number of longer-term research projects focused on: new sterile NWS production techniques, novel NWS traps and lures, NWS therapeutics that could be stockpiled and used should NWS reach the United States, and any other tools to bolster preparedness or response to NWS.
2.) Protect the United States Border - Construction of a Domestic Sterile Screwworm Production Facility
USDA will construct a sterile fly production facility in Edinburg, TX, at Moore Air Force Base, an ideal location due to the existing infrastructure and proximity to the United States-Mexico border. Built with the Army Corps of Engineers, the facility will produce up to 300 million sterile flies per week to combat NWS. This will be the only United States-based sterile fly facility and will work in tandem with facilities in Panama and Mexico to help eradicate the pest and protect American agriculture.
Why it matters:

National Security & Economic Impact - NWS threatens over $100 billion in United States economic activity tied to the cattle and livestock industry alone.

Proven Technology - Uses sterile insect technique (SIT)

Strategic Coverage - Complements Panama's facility (100M flies/week) and Mexico's upcoming facility (100M flies/week) to push NWS back toward the Darien Gap.

Reduced Vulnerability - Ends the United States-based reliance on foreign facilities for sterile fly production.

3.) Wildlife Migration Prevention
Animals don't know borders, and that leaves the U.S potentially vulnerable to NWS from wildlife migrating across the border. USDA is working aggressively to ramp up the hiring of USDA-employed mounted patrol officers, known as "Tick Riders," and other staff who will focus on border surveillance. The Tick Riders, who are mounted on horseback, will be complemented by other animal health experts who will patrol the border in vehicles and will provide the first line of defense against an NWS outbreak along the United States-Mexico border.

USDA will also begin training detector dogs to detect screwworm infestations in livestock and other animals along our border and at various ports of entry. These dogs will be essential to help control the spread of the NWS. USDA is working closely with the U.S. Department of the Interior and the U.S Customs and Border Protection to monitor the border for NWS-infected wildlife that could pose a threat to the United States.
4.) Stop the Pest from Spreading in Mexico and Ensure We Are Full Partners in Eradication
USDA Animal and Plant Health Inspection Service (APHIS) is working in collaboration with the National Service of Agri-Food Health, Safety and Quality (SENASICA) in Mexico to help them contain the pest south of the United States border by enhancing United States oversight, surveillance, improving case reporting, locking down animal movement to prevent further spread, providing traps, lures, training, and verification of Mexican NWS activities. Successful implementation will inform any future trade decisions impacting cattle movements on the southern border including the potential reopening of border areas.
5.) United States Food Safety is of Utmost Importance
To date, NWS has not been reported or detected in the United States in animals. USDA's Food Safety and Inspection Service inspects animals and carcasses at slaughter, including for NWS to keep the food supply safe.

"We have assessed the information on the ground in Mexico and have determined we must construct an additional sterile fly production facility in the United States to stop the northward advancement of this terrible pest that is threatening American cattle production. President Trump has made it clear that we must take all necessary steps to protect our country from foreign pests and diseases that threaten our economy and way of life. Today we are announcing a major investment to further America's existential role in protecting our country and secure our borders from this national security threat," said Secretary Brooke Rollins. "The construction of a domestic sterile fly production facility will ensure the United States continues to lead the way in combating this devastating pest. If our ranchers are overrun by foreign pests, then we cannot feed ourselves. USDA and Customs and Border Protection are constantly monitoring our ports of entry to keep NWS away from our borders. We are working every day to ensure our American agricultural industry is safe, secure, and resilient."

"Texas agricultural producers feed the world, with our state's food and agriculture sector supporting over 2 million well-paying jobs and creating over $867 billion in total economic impact," said Texas Greg Governor Abbott. "All of this is at risk because of the New World screwworm. Working with Secretary Rollins and members of the agricultural community nationwide, we will combat the threat from the New World screwworm right here in Texas through the building of a new facility to breed hundreds of millions of sterile New World screwworm flies. Together, we will eradicate the threat from the New World screwworm to protect our nation's food supply and economy."

"These actions - along with the FDA's efforts to facilitate meaningful treatments - represent an early, proactive, and precautionary approach," said FDA Commissioner Dr. Marty Makary, M.D., M.P.H.

"I applaud Secretary Rollins and the USDA team for taking aggressive action to combat the New World Screwworm. In June, my colleagues and I urged the Secretary to build a domestic sterile fly facility, and I'm encouraged to see that priority reflected in USDA's expanded plan. Protecting America's livestock from this dangerous pest is critical to safeguarding our food supply, supporting farmers and ranchers, and strengthening our nation's food security," said House Agriculture Committee Chairman, Representative Glenn "GT" Thompson (PA-15).

"This is exactly the kind of forward-looking investment we need to defend our food supply and livestock industry from foreign biological threats. With a new sterile fly facility on U.S. soil, stronger surveillance at the border, and real coordination between federal, state, and local partners, we're showing what it looks like to combat the spread of the New World Screwworm. I applaud Secretary Rollins and the Trump administration for their swift action to protect American farmers, ranchers, and taxpayers," said House Appropriations Agriculture Subcommittee Chairman, Representative Dr. Andy Harris (MD-1).

"This is bold, decisive action to protect American livestock from the threat of New World screwworm. I commend Secretary Rollins for prioritizing a domestic sterile fly production facility in South Texas and expanding key risk mitigation efforts. These steps will greatly strengthen our preparedness, and I look forward to continuing to work with her to eradicate this dangerous pest," said Senate Committee on Agriculture, Nutrition, and Forestry Chairman, Arkansas Senator John Boozman.

"As a livestock veterinarian by trade, I understand the risk posed to our food system by foreign animal diseases. As a livestock producer and Governor of America's leading beef producing state, I know that food security is national security. I commend Secretary Brooke Rollins and her team for their extraordinary leadership on fighting foreign animal diseases. They have been at the tip of the spear from the start, and this plan is another example of their diligence and leadership," said Nebraska Governor Jim Pillen.

"I appreciate Secretary Rollins continued support of our nation's Ag producers. This announcement doubles-down on the USDA's efforts to help feed American families. Oklahoma's ranchers and producers help feed the world and this action-first effort is a step in the right direction to keep the industry moving forward both in Oklahoma and nationwide," said Oklahoma Governor Kevin Stitt.

"I support USDA's proactive efforts to combat the potential spread of New World Screwworm in the United State. The construction of the domestic sterile fly facility in Texas represents a significant step forward in the battle to protect Alabama's livestock industry from this threat," said Alabama Commissioner of Agriculture and Industries Rick Pate.

"It took decades to eradicate this parasite from within and adjacent to our borders more than a generation ago, and this is a proactive first step. Cattle markets are already volatile and the introduction of New World screwworm within the U.S. would only increase that volatility. We thank USDA and Secretary Rollins for her leadership protecting the domestic cattle industry and we stand ready to help ensure the speedy and efficient construction of this facility and implementation of the updated plan," said American Farm Bureau Federation President Zippy Duvall.

"National Association of State Departments of Agriculture (NASDA) is grateful for USDA's investment in defending the U.S. against an outbreak of New World screwworm. NASDA is always committed to working with intergovernmental agencies and industry stakeholders to foster a collaborative approach to animal health initiatives," said National Association of State Departments of Agriculture CEO Ted McKinney.

"American cattle producers are thankful for Secretary Brooke Rollins' leadership and diligence in combatting the spread of New World screwworm. This deadly pest has negatively impacted the cattle industry before but with swift action from Secretary Rollins, we are on our way to stopping it again. USDA's work in building a sterile fly production facility at Moore Air Base will greatly help to stop the spread of screwworm and protect the American cattle herd for years to come," said National Cattlemen's Beef Association CEO Colin Woodall.

"Virginia may be far from the border, but we understand the threat the New World Screwworm poses to the livestock industry and animal health if it were to enter the United States. The announcement of a new sterile fly production facility in Texas marks a major investment that will strengthen our biosecurity infrastructure and safeguard livestock producers across the country. We are grateful to the Administration for their continued dedication to agricultural innovation and animal health," said Virginia Farm Bureau President Scott Sink.

"We're incredibly grateful to President Trump and Secretary Rollins for securing the necessary funding for a domestic production facility to combat New World Screwworm (NWS). When NWS entered the country decades ago, it was devastating to the cattle industry. This new facility is necessary and will be invaluable in the fight to protect American livestock," said Kentucky Farm Bureau President Eddie Melton.

"On behalf of livestock producers across Tennessee, we thank President Trump and Secretary Rollins for fully funding a domestic fly production facility to combat New World Screwworm. Protecting America's livestock is critical in protecting the larger food supply we all depend on, and we appreciate the Trump Administration for taking swift action to combat this threat," said Tennessee Farm Bureau President Eric Mayberry.

"On behalf of Florida's farm families, I want to thank President Donald Trump and Agriculture Secretary Brooke Rollins for their leadership in fully funding a new sterile fly production facility at Moore Air Base in Edinburg, Texas. This investment represents a historic commitment to safeguarding American agriculture from the threat of the New World screwworm," said Florida Farm Bureau Federation President Jeb S. Smith.

"The New World screwworm devastated deer and livestock populations in Texas in the 50's and 60's. Landowners that lived through that nightmare will do everything possible to prevent the same thing from happening again. But they need help desperately, and the USDA is the best partner to provide that help. The Texas Chapter of The Wildlife Society supports their efforts 100% and thanks Secretary Rollins and Governor Abbott for leading the charge," said Executive Director Texas Chapter of The Wildlife Society Matt Wagner Ph.D.

"We appreciate Secretary Rollins' commitment to protecting American livestock and the livelihood of American farmers and ranchers. It is imperative that we have a production facility in the United States to combat the New World Screwworm. She worked tirelessly to make this happen. Alabama farmers and ranchers thank Secretary Rollins and President Trump for their quick and decisive response to this destructive pest," said Alabama Farmers Federation President Jimmy Parnel.

"We commend and thank President Trump and Sec. Rollins for recognizing the importance of working to eradicate NWS. If this were not done, the impact on our domestic industry could be tragic," said South Dakota Farm Bureau President Scott VanderWal.

"Louisiana farmers and ranchers thank President Donald J. Trump and U.S. Secretary of Agriculture Brooke Rollins for making this sterile fly facility a top priority. For Louisiana's cattle, equine, sheep, and goat producers, this facility is not just an agricultural milestone-it's a shield for our way of life. Livestock production is a cornerstone of rural communities in our state and ensuring that we have the resources to prevent and respond to NWS infestations is vital to maintaining both animal welfare and economic stability," said Louisiana Farm Bureau President Richard Fontenot.

"The Texas Parks and Wildlife Department (TPWD) supports the efforts of Secretary Rollins and Governor Abbott to ensure we have the appropriate tools to combat the New World screwworm pest that is a looming threat to Texas livestock and wildlife. Developing a sterile fly production facility in South Texas is a critical step in ensuring the long-term health and sustainability of white-tailed deer and other wildlife enjoyed by many Texans. We appreciate the foresight and commitment by Secretary Rollins and Governor Abbott to make the fly production facility a reality, and we stand ready to assist in combating this threat alongside our partners," said Texas Parks and Wildlife Department Executive Director Dr. David Yoskowitz.

"We applaud the Trump Administration for making this issue a top priority on behalf of Mississippi's and our nation's livestock producers. The federal investment announced today will better equip our frontline defense against the catastrophic destruction this pest can cause. We thank USDA Secretary Brooke Rollins and her team for their expeditious work in addressing the concerns of the agricultural industry and urge their continued research on all mitigation efforts to battle this devastating pest," said Mississippi Farm Bureau Federation President Mike McCormick.

"The importance of equipping the U.S. to combat the threat of New World screwworm cannot be overstated. As Texans and cattle producers, we welcome the placement of the sterile fly production facility at Moore Airfield Base, putting it on the front lines of this critical fight. Increasing sterile fly production has long been a priority for the Texas cattle industry, which contributes $13 billion to our state's economy annually. We remain committed to supporting both state and federal efforts to manage this threat and deeply appreciate the leadership of Secretary Rollins, the administration and Governor Abbott in prioritizing the needs of Texas and U.S. production agriculture," said Texas & Southwestern Cattle Raisers Association President Carl Ray Polk, Jr.

"The New World Screwworm is like something straight out of a horror film and poses a serious threat to Texas agriculture, affecting livestock, wildlife, and pets. I appreciate USDA Secretary Brooke Rollins's strong leadership and her visit to Texas to deliver this important announcement. Her presence highlights her understanding of the seriousness of this issue and her ongoing dedication to supporting our agricultural producers. Our strong partnership with the USDA remains vital in addressing this challenge effectively. United, we will protect this essential industry. Texas is resilient, and the Texas Department of Agriculture is committed to stopping this threat," said Texas Agriculture Commissioner Sid Miller.

"The New Mexico Farm & Livestock Bureau strongly supports USDA's investment in a domestic sterile fly facility to combat the New World Screw Worm. This proactive step will protect livestock health, safeguard rural economies, and strengthen America's ability to respond quickly to future outbreak," said New Mexico Farm and Livestock Bureau Director of Government Affairs Becca Luten.

"The Texas Wildlife Association and its members applaud Secretary Rollins and the Trump Administration for taking meaningful action to safeguard human and animal health, our rural economies and way of life, from the growing threat of the New World Screwworm. Today's announcement of a sterile fly production facility in South Texas is welcome news to the landowners, wildlife managers and sportsmen most directly and immediately affected by this emergency," said Texas Wildlife Association CEO Justin Dreibelbis.

"Michigan Farm Bureau thanks President Trump and Secretary Rollins for this critical investment. Protecting the US livestock industry from the Screwworm pest is of upmost importance to our producers, and we look forward to continuing to engage with the Administration in this effort," said Michigan Farm Bureau National Legislative Counsel Jacob Smith.

"Texas Farm Bureau commends Secretary Rollins and the Trump Administration for recognizing the gravity of this issue and taking bold steps to address it. We look forward to continuing our work with them and other stakeholders to advance solutions that protect livestock and wildlife producers, consumers, and the economic vitality of our state," said Texas Farm Bureau President Russell Boening.

"With the approach of the New World Screwworm threatening Texas, I applaud the efforts of Secretary Rollins and the Trump administration to bring the weight of the Federal Government to the battle. The future of livestock production in Texas is at risk. It is encouraging to have the USDA and other federal assets come join our farmers and ranchers in meeting this challenge," said Texas State Representative Stan Kitzman.

"We are thankful to Secretary Brooke Rollins and her team at USDA for their continued support and commitment to our farmers and ranchers. Their efforts to prioritize livestock producers to take swift action against the New World Screwworm is essential to safeguarding the health of our livestock and wildlife," said South Carolina Farm Bureau Federation National Affairs and Commodity Coordinator Dwight Cauthen.

"Today's announcement from Secretary Rollins to fund the construction of a sterile fly production facility in Mission reflects her commitment to planning, preparing and protecting the U.S. cattle herd from New World Screwworm. This announcement is sincerely appreciated by TCFA as the sterile insect technique is the only proven way to eradicate New World Screwworm. We commend President Trump, Secretary Rollins and APHIS Administrator Michael Watson for their continuous dedication to using science-based information to make decisions to protect not only our cattle herd but also ensure supply chain stability," said Texas Cattle Feeders Association Chairman Robby Kirkland.

"Pennsylvania Farm Bureau is grateful for USDA Secretary Rollins and this Administration's work to combat invasive species like the New World Screwworm to protect the health and well-being of our livestock. This announcement today emphasizes the commitment from USDA to prioritize animal health and biosecurity," said Pennsylvania Farm Bureau President Chris Hoffman.

"Screwworms pose a severe threat to livestock, particularly the sheep and goat industry, and the Texas Sheep and Goat Raisers Association appreciates the efforts of Secretary Rollins to help address this issue. TSGRA supports all efforts to provide surveillance for screwworm flies, offer technical assistance to producers as needed, and immediately expand sterile fly production and distribution centers in the U.S., Mexico, and Central America as necessary," said Texas Sheep & Goat Raisers Association President Sharon Pfluger Holman.

"The Texas Animal Health Commission commends Secretary Rollins and Governor Abbott's critical action in expanding New World screwworm eradication efforts. The sterile insect technique combined with animal health response plans, that include science based approaches and producer engagement, are key factors in ensuring continuity of Texas animal agriculture businesses and promoting overall animal health and productivity. Today's announcement bolsters the ongoing collaborative efforts between the USDA and Texas animal health officials to serve as the first line of defense in protecting U.S. animal agriculture," said Texas Animal Health Commission Executive Director and State Veterinarian Dr. Lewis R. "Bud" Dinges, DVM.

"The threat of screwworm infestation is a direct attack on Texas agriculture. Livestock consume well over 90% of Texas-grown corn, making cattle a staple market for corn farmers - many of whom include both corn and cattle in their operations. A screwworm outbreak would not only devastate the cattle industry but would also cripple the demand for Texas-grown corn. Texas Corn Producers Association appreciates USDA and Secretary Rollins' swift action against the screw worm, accelerating our ability to protect our animals and markets," said Texas Corn Producers Association Executive Vice President David Gibson.

"I commend President Trump and Secretary Rollins for their decisive action to protect Florida's cattle industry from the devastating threat of the New World Screwworm. By accelerating construction of a domestic sterile fly distribution facility, USDA is putting America's ranchers first, safeguarding our food supply, and defending the backbone of our agricultural communities. Their leadership ensures that America's cattle producers can continue to feed our nation and the world," said Representative Daniel Webster (FL-11).

"We applaud USDA Secretary Rollins for taking bold action to protect our food security from invasive pests like the New World Screwworm. This effort follows a letter we sent earlier this year encouraging the USDA to keep this parasite out of our country. The Trump Administration and congressional Republicans will always put American farmers and ranchers FIRST!" said Representative Mark Alford (MO-4).

"I am thankful to see Secretary Rollins take decisive action to combat the New World Screwworm. Building a sterile fly production facility in Edinburg, Texas, will put America first and end our reliance on other countries. Thank you, Secretary Rollins for your continued support for our farmers," said Representative Michael Guest (MS-03).

"The strong, decisive leadership of President Trump, Secretary Rollins, and USDA continues to put the farmers, ranchers, and ag producers who feed, fuel, and clothe the world first. Investing in a domestic sterile fly facility is a critical step to stop the spread of New World Screwworm. Thank you for standing with American ranchers and taking decisive action to protect American livestock. Promises made, promises kept," said Representative Tracy Mann (KS-1).

"Investing in a domestic fly facility is a necessary step to combat the spread of New World Screwworm. This decision will protect American agriculture, livestock, and our food supply. Thank you Secretary Rollins for your decisive leadership on this issue. Supporting American farmers and ranchers is another promise made, promise kept by this administration!" said Representative Mike Simpson (ID-2).

"New World Screwworm is not only a threat to livestock, but also the livelihoods of farmers and ranchers across the great state of Texas. Secretary Rollins' bold five-pronged strategy and the deployment of an $8.5 million sterile fly dispersal facility in South Texas demonstrates this administration's unwavering commitment to supporting America's agricultural producers. I look forward to continuing to work alongside the Trump administration to ensure this plan is fully implemented and our farmers and ranchers have the federal support necessary to protect their operations and America's food security," said Representative August Pfluger (TX-11).

"Texas has long led the nation's cattle industry, and it's imperative for state and federal leaders to use every tool at our disposal to protect our food supply from the destructive New World screwworm. Today's announcement of funding I supported for the USDA to combat this pest is a huge step forward, and I thank Secretary Rollins and Governor Abbott for their work and will continue to work alongside them to ensure Texas has the resources it needs to halt the spread," said Texas Senator John Cornyn.

"Agriculture and livestock are a core part of Texas economy and are how the Lone Star State feeds America and the world. I applaud Secretary Rollins for understanding the threat posed by the New World Screwworm and taking immediate action. I have been working with Secretary Rollins, Texas authorities, and my colleagues in Congress to safeguard America's livestock from this threat," said Texas Senator Ted Cruz.

"If we do not act now, the New World Screwworm could devastate Texas livestock and wildlife. Thank you, Secretary Rollins, for swiftly establishing the critical sterile fly distribution facility in Hidalgo County and delivering solutions to combat the threat posed by this parasite. I am committed to working alongside the Administration to put Texas farmers and ranchers first and safeguard our agriculture industry," said Representative Monica De La Cruz (TX-15).

"This Congress, one of my top priorities has been to strengthen our nation's preparedness against a potential screwworm outbreak. That includes the construction of a domestic fly production facility, which is a key pillar of my STOP Screwworms Act. Under Secretary Rollins' leadership of the USDA, we have made incredible strides to eliminate this dangerous parasite and protect our livestock industry. Today's historic announcement is just further proof that this administration is prioritizing our farmers and ranchers like never before. Thank you, Secretary Rollins and Governor Abbott, for always being a steadfast partner in the good fight to protect Texas' essential farmers and ranchers," said Representative Tony Gonzales (TX-23).
Background & Previous Action
Since announcing the plan in June, Secretary Rollins, USDA, and our federal and state partners have worked around the clock to keep NWS out of the United States and prepare for all contingencies in case NWS does enter the United States:

After a case of NWS was reported 370 miles south of the United States-Mexico border in July, Secretary Rollins closed southern ports of entry to livestock trade. This new northward detection came approximately two months after northern detections were reported in Oaxaca and Veracruz, less than 700 miles away from the United States border, which triggered the closure of our ports to Mexican cattle, bison, and horses on May 11, 2025.

USDA is investing $21 million to renovate an existing fruit fly production facility in Metapa, Mexico, which will provide an additional 60-100 million sterile flies. APHIS technical experts developed a comprehensive work plan and will continue to share their expertise to help Mexico bring this facility online as quickly as possible.

In June, APHIS began modifying an existing building at Moore Air Base in South Texas to establish a domestic sterile insect dispersal facility. Construction of the $8.5 million facility is on track for substantial completion at the end of 2025, with capacity to process up to 100 million flies a week, sourced from the existing production facility in Panama and, eventually, the facility USDA is helping renovate in Mexico. Importantly, this is part of our extensive contingency planning should NWS one day be detected in the United States. This facility does not produce sterile flies and will only be used if USDA deems it necessary to distribute flies in the Southern United States and northern Mexico.

USDA is rapidly exploring and seeking to validate a variety of technologies. APHIS held four public listening sessions to learn from companies, industry, academia, and the public about e-beam and x-ray technologies, potential sterile NWS strain improvements, genetically engineered flies, modular and other facilities for sterilization, and fast-tracking animal drug and treatment approvals, among other proposals. APHIS is further evaluating and validating the most promising options to help inform ongoing decision-making.

USDA leadership and technical staff at all levels continue daily collaboration with Mexico to contain NWS within its borders.

As part of a robust audit of Mexico's animal health controls, APHIS conducted site visits in June to evaluate Mexico's response and provide comprehensive feedback. As a result of inadequacies found in this audit, USDA is working diligently to help Mexico improve its surveillance, including development of a more robust trapping plan to conduct surveillance in areas of greatest priority, particularly in and around Veracruz and along the United States-Mexico border.

APHIS published an updated national disease response strategy for NWS, and is partnering with state animal and wildlife health officials to update and finalize emergency management plans. The agency is providing training and webinars for federal and state animal and wildlife officials, Tribal partners, and veterinarians.

APHIS made a number of technical and informational materials available to escalate communications and public outreach along the United States-Mexico border, particularly with veterinarians and animal owners. Materials such as pest ID cards and pest alerts raise awareness to be on the lookout for NWS. APHIS experts have held over 50 meetings with stakeholders to enlist their help and keep them informed about NWS developments, with several more upcoming webinars for members of the animal industry, vets, and state animal health officials.

USDA is leveraging Agricultural Research Service (ARS) experts to continue to develop novel treatments, preventatives, and response strategies. ARS scientists are located both in Texas at the Knipling-Bushland Livestock Insects Research Laboratory and at the Panama-United States Commission for the Eradication and Prevention of Screwworm (COPEG) facility in Panama. They are evaluating new attractants and potential trap and kill systems, improving the efficiency of sterile NWS production techniques, evaluating NWS strains, including genetically engineered strains, and developing models to predict NWS northward spread, among many other projects.

FDA has information available about current extra-label use of approved animal drugs and their role in treatment and prevention of NWS in animals.

Learn more about USDA's activities in response to New World Screwworm.

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USDA Announces Sweeping Plans to Protect the United States from New World Screwworm

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS).

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1. The flies are laying eggs inside the wounds of animals that have a decent amount of warmth for their eggs.

2. People are worried about whether it's going to affect any living animal when the flies start spreading around certain places.

3. These flies lay their eggs on humans, dogs, and cats, which can be a severe danger to their health.

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1. I wonder if the flies had the advantage to take over the livestock

2. I wonder if a human got infected with the flies, what would be the symptoms or health complications

3. I wonder who the first person who found out about these flies knew what they could do.

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The US has a plan to breed millions of flies and drop them from planes. Here’s why | CNN

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Flesh-eating maggots are inching toward the southwestern border of the US. The defense plan? Breed millions of sterilized flies and drop them from the sky.

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1. These flies are threatening to individuals, due to them deposing eggs into wounds of organisms that we consume being a threat to our health.

2. These flies can be eradicated in their pupal stage by subjected irradiation exposure, which then damages their chromosomes not getting them to produce children.

3. Individuals could tell if an animal is infested by a screwworm due to their wound having larvae in it.

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1: I wonder if it's possible that the main solution that worked in 1966 and 1967, would not work for this new type of screwworm.

2: I wonder if it's possible to create or find a virus that will only infect and kill screwworms.

3: I wonder if other Continents are having the same problem with the same, new type of screwworm.

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New World screwworm (NWS) is a species of parasitic flies that feed on live tissue.

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"This fly poses a serious threat to livestock and wildlife because it deposits eggs into the wounds of living animals, thereby leading to larval infestations. Because they can host on any living mammal, they can also affect pets and humans."

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1. I wonder if there's some sort of sprays or creams that can be put on animals or humans to avoid any contact with this type of insect, so we can't be harmed by them?

2. I wonder why we never seen these screwworms or have we just mistaken them for normal flies?

3. I wonder if we don't do anything about screwworms, will the population start increasing while more animals and humans are being infested?

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Gene Editing and Fly Factories: The Fight Against a Flesh-Eating Pest
The American and Mexican governments are exploring “all options” to battle a deadly parasite threatening cattle and wildlife.

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Screwworms are not only a threat to our cattle but also us. These screwworms are "flies that will lay their eggs in all warm-blooded animals". They can also attack humans but it is not as common. These flies can also affect industries in the United States. However, scientists are trying to come up with a solution to stop these flies from eating their victims. One way that they will try to stop the spread is to sterilize the flies. The United States plan is to "Construct a sterile fly production facility in Edinburg, TX, at Moore Air Force Base". If these plans work, it will benefit our cattle and our farmers.

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"Ooh, look what we did as entomologists and veterinarians, we eradicated this New World screwworm, and how terrible it was, as well as a tick species that we got rid of. But they have actually come out of the textbooks. And I’m a little sad about that because I preferred them staying in black and white."

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1. The screwworm can threaten the food supply, since it can lay eggs on cows.

2. The flies only mate once in their life, so by making mating ineffective the population shrunk in the United States.

3. The flies prefer to live in tropical regions which is why they are heading north.

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1. I wonder if a certain injection or medicine can be made to prevent the harm of them on animals and livestock.

2. I wonder if different continents experience the same problem with these screwworms, or have a dangerous insect of their own.

3. I wonder if the reaction of livestock obtaining screwworms is similar if a human happens to get them.

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Flesh-Eating ‘Screwworm’ Parasites Are Headed to the U.S. What That Means for You

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Screwworm parasites primarily infect livestock, but human cases have risen in Central America after the pests escaped containment

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These Screwworms are not to be messed with. "This fly was technically eradicated from the US back in the '70s",so scientists have no doubt seen this before.Which means it shouldn't be something to worry about right? Wrong "This fly is notorious for laying eggs in the wounds of animals and slowly eating its victims from the inside out.". Not only animals get infected,even humans can "In places where the flies are present, people can also become present.".No warm blooded animals are safe from any screwworm species. Imagine taking out a black head, and one day having screwworms growing in your nose, that would be terrible.The more common places to find these are in wounds but, "They could also be in your nose, eyes, or mouth.This specific type of animal will find anything to continue their bloodline.

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I've always hated flies, now how I'm learning about screwworms which is a threat to animals and humans, due to them deposing eggs into any open wounds which can lead to larval infestations, I hate them much more. These types of insects can kill any individual if they are not treated immediately, which sounds terrifying. "Since the 1970s, the screwworm has largely stayed out of the United States," but what about now? are screwworms now in the United States, if so how can one avoid them? “Screwworm’s a pretty specialized thing, right? Not too many people know about it or ever worked in it, and if you lose people who have that expertise, that’s a big problem;" okay if it's a big problem how come the government is not doing anything to stop this. Specific irradiation is used on the flies damaging their chromosomes and making them stop producing children, without damaging their ability to fly, but shouldn't scientist make something that would damage their ability to fly? because they're harming our environment and why do we even need screwworms. "Eradication is the best way to control screwworms," if this is a beneficial way to control them then how come nobody is using this "best way." I've learned that the cattle industry is facing high feed prices, drought and consolidation, because we don't do anything about this situation. supposedly the agency is using 9,000 existing fruit fly traps. lastly I've learned that there are many types of methods to get rid of these flies, but I think the beneficial way is the changing of climate change. I say that it's the most beneficial way because the flies won't come in areas where it's really cold or rainy.

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The New World Screwworm is an insanely dangerous species that can harm both humans and animals due to them being attracted to warm-blooded mammals.

This screwworm lays its eggs in open wounds, and the larvae eat the animal from the inside out.

Although the screwworm was eradicated in the 1970s, it is now coming back up north from South America, Mexico, and the U.S. It is likely that it is coming back up because of climate change.

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"Yeah, I mean, I think it’s important that people do some research, look it up, and realize that this is a real insect. We do target talking to livestock folks, because we know people who own cattle and other livestock are going to be impacted. So we just want people to be aware, to understand its importance and the significance and the reason why we need to keep it out of the United States."

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What would be the symptoms if the screwworm were to infect a human?.

Is climate change the only cause of them coming back up?

Will scientists try different ways to eradicate them once more?.

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The New World Screwworm is an invasive fly that originates from the Darien Gap in South America. Although its name might be misleading, this species of fly has been here for years. In the article, Sonja Swinger, an entomologist from Texas A&M, states that "There are two species in the entire world that are known to be of this nature. And one lives on our side of the world. And the other lives on the other side of the world, over in Africa and Europe, and other countries. And it’s called the Old World screwworm. So that’s why ours is called the New World screwworm, based on old histories and coming to the New World.". So technically, this fly species is anything but new, and although the name is misleading, we have to understand that it is not new. The Screwworm is extremely dangerous to warm-blooded mammals due to its liking and preference for warmer climates. This fly lays its eggs in the open wounds of mammals and essentially eats it from the outside in, which kills the mammal slowly while it's still alive. The screwworm was "eradicated" back in the 70's by a program that was being funded by the U.S., in which scientists would drop sterilized male screwworm flies onto these flies' habitats, which in turn would prevent the flies from being able to reproduce. All of this was working until recently, when these flies started to move north into Mexico and the U.S. When asked why they're moving up north, Dr.Swinger states that " that’s tough to pinpoint. One of the issues is mild winters, because this is a species that is tropically based. It doesn’t do well in cold temperatures. But as you have consistent, mild winters in an area, that can expand its range". So, a likely conclusion for them moving up is due to climate change. Overall, these flies are dangerous to everyone due to their implanting in anything from cattle to humans. Additionally, if they implant into cattle, this hurts the cattle industry due to many animals die due to the flies.

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New world Screwworms are a pest that eat warm blooded animals from the inside. The pests infect through wounds where flies lay eggs in the animals wounds. New world screwworms originally were most prevalent in South america, but were eradicated, and now are most common in central America and Mexico. The United States invests money into projects in mexico to try to prevent the pest from coming into the US, since cattle is one of the largest industries in the country. A podcast from science friday featuring entomologist sonja swiger claims that millions of screwworm flies are the key to eradicating the pest. This involves the process of radiating flies so that they genetically are unable to have offspring and dropping them hoping that they mate with other flies. This is shown when Swiger States, "you’re oversaturating the wild population with these now sterile males in hopes that these males will be found by those wild females. And then, as they keep mating with the sterile males, they think that they are bred in order to lay eggs. And they do lay their eggs, but they lay eggs that don’t hatch." Although this podcast shows a path to the eradication of the pests, an article from Drovers claims that the mexican government is not doing enough, allowing for the screwworms to get as close as 700 miles from the US border. According to the article, Colin Woodall, the ceo of the NCBA told them, "the country has poorly managed the situation so far . . . it’s because of the Mexican government’s failures that Rollins stepped up and closed the border on Sunday to “send a very clear signal that they have failed, and they’ve got to step up their approach.”" As stated before, the US livestock industries are some of the largest in the country, which is why the United States is putting a lot of pressure on Mexico into getting rid of the pest. The US cattle herds are the smallest than they have been in 60 years and the screwworm can also be deadly to many other species.

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS). This announcement builds upon USDA's five-pronged plan issued in June to combat the northward spread of NWS from Mexico into the United States.

NWS is a devastating pest. When NWS fly larvae (maggots) burrow into the flesh of a living animal, they cause serious, often deadly damage to the animal. NWS can infest livestock, pets, wildlife, occasionally birds, and in rare cases, people. It is not only a threat to our ranching community - but it is a threat to our food supply and our national security.

While USDA is coordinating efforts to combat NWS, it will require continued collaboration between Federal agencies, State governments, and the private sector. That is why USDA is working alongside the U.S. Food and Drug Administration to encourage animal drug development and prioritize approvals for prevention and treatment of the pest, the U.S. Environmental Protection Agency and the U.S. Department of Energy on new innovations to enhance our ability to combat the pest with technologies, and the U.S. Customs and Border Protection to protect the United States border. The United States government will also work alongside Governors, State Agriculture Commissioners, State veterinarians, and others to combat this pest.

As part of this comprehensive approach, USDA is taking the following immediate actions:
1.) Innovate Our Way to Eradication
While sterile flies are currently the most effective way to prevent the spread of NWS, technology continues to evolve and as such USDA will provide up to $100 million to invest in viable innovations which could show rapid advancement of promising technologies that will augment the United States facility and accelerate the pace of sterile fly production if proven successful. USDA will support proven concepts that only require funding to scale and implement as well as a number of longer-term research projects focused on: new sterile NWS production techniques, novel NWS traps and lures, NWS therapeutics that could be stockpiled and used should NWS reach the United States, and any other tools to bolster preparedness or response to NWS.
2.) Protect the United States Border - Construction of a Domestic Sterile Screwworm Production Facility
USDA will construct a sterile fly production facility in Edinburg, TX, at Moore Air Force Base, an ideal location due to the existing infrastructure and proximity to the United States-Mexico border. Built with the Army Corps of Engineers, the facility will produce up to 300 million sterile flies per week to combat NWS. This will be the only United States-based sterile fly facility and will work in tandem with facilities in Panama and Mexico to help eradicate the pest and protect American agriculture.
Why it matters:

National Security & Economic Impact - NWS threatens over $100 billion in United States economic activity tied to the cattle and livestock industry alone.

Proven Technology - Uses sterile insect technique (SIT)

Strategic Coverage - Complements Panama's facility (100M flies/week) and Mexico's upcoming facility (100M flies/week) to push NWS back toward the Darien Gap.

Reduced Vulnerability - Ends the United States-based reliance on foreign facilities for sterile fly production.

3.) Wildlife Migration Prevention
Animals don't know borders, and that leaves the U.S potentially vulnerable to NWS from wildlife migrating across the border. USDA is working aggressively to ramp up the hiring of USDA-employed mounted patrol officers, known as "Tick Riders," and other staff who will focus on border surveillance. The Tick Riders, who are mounted on horseback, will be complemented by other animal health experts who will patrol the border in vehicles and will provide the first line of defense against an NWS outbreak along the United States-Mexico border.

USDA will also begin training detector dogs to detect screwworm infestations in livestock and other animals along our border and at various ports of entry. These dogs will be essential to help control the spread of the NWS. USDA is working closely with the U.S. Department of the Interior and the U.S Customs and Border Protection to monitor the border for NWS-infected wildlife that could pose a threat to the United States.
4.) Stop the Pest from Spreading in Mexico and Ensure We Are Full Partners in Eradication
USDA Animal and Plant Health Inspection Service (APHIS) is working in collaboration with the National Service of Agri-Food Health, Safety and Quality (SENASICA) in Mexico to help them contain the pest south of the United States border by enhancing United States oversight, surveillance, improving case reporting, locking down animal movement to prevent further spread, providing traps, lures, training, and verification of Mexican NWS activities. Successful implementation will inform any future trade decisions impacting cattle movements on the southern border including the potential reopening of border areas.
5.) United States Food Safety is of Utmost Importance
To date, NWS has not been reported or detected in the United States in animals. USDA's Food Safety and Inspection Service inspects animals and carcasses at slaughter, including for NWS to keep the food supply safe.

"We have assessed the information on the ground in Mexico and have determined we must construct an additional sterile fly production facility in the United States to stop the northward advancement of this terrible pest that is threatening American cattle production. President Trump has made it clear that we must take all necessary steps to protect our country from foreign pests and diseases that threaten our economy and way of life. Today we are announcing a major investment to further America's existential role in protecting our country and secure our borders from this national security threat," said Secretary Brooke Rollins. "The construction of a domestic sterile fly production facility will ensure the United States continues to lead the way in combating this devastating pest. If our ranchers are overrun by foreign pests, then we cannot feed ourselves. USDA and Customs and Border Protection are constantly monitoring our ports of entry to keep NWS away from our borders. We are working every day to ensure our American agricultural industry is safe, secure, and resilient."

"Texas agricultural producers feed the world, with our state's food and agriculture sector supporting over 2 million well-paying jobs and creating over $867 billion in total economic impact," said Texas Greg Governor Abbott. "All of this is at risk because of the New World screwworm. Working with Secretary Rollins and members of the agricultural community nationwide, we will combat the threat from the New World screwworm right here in Texas through the building of a new facility to breed hundreds of millions of sterile New World screwworm flies. Together, we will eradicate the threat from the New World screwworm to protect our nation's food supply and economy."

"These actions - along with the FDA's efforts to facilitate meaningful treatments - represent an early, proactive, and precautionary approach," said FDA Commissioner Dr. Marty Makary, M.D., M.P.H.

"I applaud Secretary Rollins and the USDA team for taking aggressive action to combat the New World Screwworm. In June, my colleagues and I urged the Secretary to build a domestic sterile fly facility, and I'm encouraged to see that priority reflected in USDA's expanded plan. Protecting America's livestock from this dangerous pest is critical to safeguarding our food supply, supporting farmers and ranchers, and strengthening our nation's food security," said House Agriculture Committee Chairman, Representative Glenn "GT" Thompson (PA-15).

"This is exactly the kind of forward-looking investment we need to defend our food supply and livestock industry from foreign biological threats. With a new sterile fly facility on U.S. soil, stronger surveillance at the border, and real coordination between federal, state, and local partners, we're showing what it looks like to combat the spread of the New World Screwworm. I applaud Secretary Rollins and the Trump administration for their swift action to protect American farmers, ranchers, and taxpayers," said House Appropriations Agriculture Subcommittee Chairman, Representative Dr. Andy Harris (MD-1).

"This is bold, decisive action to protect American livestock from the threat of New World screwworm. I commend Secretary Rollins for prioritizing a domestic sterile fly production facility in South Texas and expanding key risk mitigation efforts. These steps will greatly strengthen our preparedness, and I look forward to continuing to work with her to eradicate this dangerous pest," said Senate Committee on Agriculture, Nutrition, and Forestry Chairman, Arkansas Senator John Boozman.

"As a livestock veterinarian by trade, I understand the risk posed to our food system by foreign animal diseases. As a livestock producer and Governor of America's leading beef producing state, I know that food security is national security. I commend Secretary Brooke Rollins and her team for their extraordinary leadership on fighting foreign animal diseases. They have been at the tip of the spear from the start, and this plan is another example of their diligence and leadership," said Nebraska Governor Jim Pillen.

"I appreciate Secretary Rollins continued support of our nation's Ag producers. This announcement doubles-down on the USDA's efforts to help feed American families. Oklahoma's ranchers and producers help feed the world and this action-first effort is a step in the right direction to keep the industry moving forward both in Oklahoma and nationwide," said Oklahoma Governor Kevin Stitt.

"I support USDA's proactive efforts to combat the potential spread of New World Screwworm in the United State. The construction of the domestic sterile fly facility in Texas represents a significant step forward in the battle to protect Alabama's livestock industry from this threat," said Alabama Commissioner of Agriculture and Industries Rick Pate.

"It took decades to eradicate this parasite from within and adjacent to our borders more than a generation ago, and this is a proactive first step. Cattle markets are already volatile and the introduction of New World screwworm within the U.S. would only increase that volatility. We thank USDA and Secretary Rollins for her leadership protecting the domestic cattle industry and we stand ready to help ensure the speedy and efficient construction of this facility and implementation of the updated plan," said American Farm Bureau Federation President Zippy Duvall.

"National Association of State Departments of Agriculture (NASDA) is grateful for USDA's investment in defending the U.S. against an outbreak of New World screwworm. NASDA is always committed to working with intergovernmental agencies and industry stakeholders to foster a collaborative approach to animal health initiatives," said National Association of State Departments of Agriculture CEO Ted McKinney.

"American cattle producers are thankful for Secretary Brooke Rollins' leadership and diligence in combatting the spread of New World screwworm. This deadly pest has negatively impacted the cattle industry before but with swift action from Secretary Rollins, we are on our way to stopping it again. USDA's work in building a sterile fly production facility at Moore Air Base will greatly help to stop the spread of screwworm and protect the American cattle herd for years to come," said National Cattlemen's Beef Association CEO Colin Woodall.

"Virginia may be far from the border, but we understand the threat the New World Screwworm poses to the livestock industry and animal health if it were to enter the United States. The announcement of a new sterile fly production facility in Texas marks a major investment that will strengthen our biosecurity infrastructure and safeguard livestock producers across the country. We are grateful to the Administration for their continued dedication to agricultural innovation and animal health," said Virginia Farm Bureau President Scott Sink.

"We're incredibly grateful to President Trump and Secretary Rollins for securing the necessary funding for a domestic production facility to combat New World Screwworm (NWS). When NWS entered the country decades ago, it was devastating to the cattle industry. This new facility is necessary and will be invaluable in the fight to protect American livestock," said Kentucky Farm Bureau President Eddie Melton.

"On behalf of livestock producers across Tennessee, we thank President Trump and Secretary Rollins for fully funding a domestic fly production facility to combat New World Screwworm. Protecting America's livestock is critical in protecting the larger food supply we all depend on, and we appreciate the Trump Administration for taking swift action to combat this threat," said Tennessee Farm Bureau President Eric Mayberry.

"On behalf of Florida's farm families, I want to thank President Donald Trump and Agriculture Secretary Brooke Rollins for their leadership in fully funding a new sterile fly production facility at Moore Air Base in Edinburg, Texas. This investment represents a historic commitment to safeguarding American agriculture from the threat of the New World screwworm," said Florida Farm Bureau Federation President Jeb S. Smith.

"The New World screwworm devastated deer and livestock populations in Texas in the 50's and 60's. Landowners that lived through that nightmare will do everything possible to prevent the same thing from happening again. But they need help desperately, and the USDA is the best partner to provide that help. The Texas Chapter of The Wildlife Society supports their efforts 100% and thanks Secretary Rollins and Governor Abbott for leading the charge," said Executive Director Texas Chapter of The Wildlife Society Matt Wagner Ph.D.

"We appreciate Secretary Rollins' commitment to protecting American livestock and the livelihood of American farmers and ranchers. It is imperative that we have a production facility in the United States to combat the New World Screwworm. She worked tirelessly to make this happen. Alabama farmers and ranchers thank Secretary Rollins and President Trump for their quick and decisive response to this destructive pest," said Alabama Farmers Federation President Jimmy Parnel.

"We commend and thank President Trump and Sec. Rollins for recognizing the importance of working to eradicate NWS. If this were not done, the impact on our domestic industry could be tragic," said South Dakota Farm Bureau President Scott VanderWal.

"Louisiana farmers and ranchers thank President Donald J. Trump and U.S. Secretary of Agriculture Brooke Rollins for making this sterile fly facility a top priority. For Louisiana's cattle, equine, sheep, and goat producers, this facility is not just an agricultural milestone-it's a shield for our way of life. Livestock production is a cornerstone of rural communities in our state and ensuring that we have the resources to prevent and respond to NWS infestations is vital to maintaining both animal welfare and economic stability," said Louisiana Farm Bureau President Richard Fontenot.

"The Texas Parks and Wildlife Department (TPWD) supports the efforts of Secretary Rollins and Governor Abbott to ensure we have the appropriate tools to combat the New World screwworm pest that is a looming threat to Texas livestock and wildlife. Developing a sterile fly production facility in South Texas is a critical step in ensuring the long-term health and sustainability of white-tailed deer and other wildlife enjoyed by many Texans. We appreciate the foresight and commitment by Secretary Rollins and Governor Abbott to make the fly production facility a reality, and we stand ready to assist in combating this threat alongside our partners," said Texas Parks and Wildlife Department Executive Director Dr. David Yoskowitz.

"We applaud the Trump Administration for making this issue a top priority on behalf of Mississippi's and our nation's livestock producers. The federal investment announced today will better equip our frontline defense against the catastrophic destruction this pest can cause. We thank USDA Secretary Brooke Rollins and her team for their expeditious work in addressing the concerns of the agricultural industry and urge their continued research on all mitigation efforts to battle this devastating pest," said Mississippi Farm Bureau Federation President Mike McCormick.

"The importance of equipping the U.S. to combat the threat of New World screwworm cannot be overstated. As Texans and cattle producers, we welcome the placement of the sterile fly production facility at Moore Airfield Base, putting it on the front lines of this critical fight. Increasing sterile fly production has long been a priority for the Texas cattle industry, which contributes $13 billion to our state's economy annually. We remain committed to supporting both state and federal efforts to manage this threat and deeply appreciate the leadership of Secretary Rollins, the administration and Governor Abbott in prioritizing the needs of Texas and U.S. production agriculture," said Texas & Southwestern Cattle Raisers Association President Carl Ray Polk, Jr.

"The New World Screwworm is like something straight out of a horror film and poses a serious threat to Texas agriculture, affecting livestock, wildlife, and pets. I appreciate USDA Secretary Brooke Rollins's strong leadership and her visit to Texas to deliver this important announcement. Her presence highlights her understanding of the seriousness of this issue and her ongoing dedication to supporting our agricultural producers. Our strong partnership with the USDA remains vital in addressing this challenge effectively. United, we will protect this essential industry. Texas is resilient, and the Texas Department of Agriculture is committed to stopping this threat," said Texas Agriculture Commissioner Sid Miller.

"The New Mexico Farm & Livestock Bureau strongly supports USDA's investment in a domestic sterile fly facility to combat the New World Screw Worm. This proactive step will protect livestock health, safeguard rural economies, and strengthen America's ability to respond quickly to future outbreak," said New Mexico Farm and Livestock Bureau Director of Government Affairs Becca Luten.

"The Texas Wildlife Association and its members applaud Secretary Rollins and the Trump Administration for taking meaningful action to safeguard human and animal health, our rural economies and way of life, from the growing threat of the New World Screwworm. Today's announcement of a sterile fly production facility in South Texas is welcome news to the landowners, wildlife managers and sportsmen most directly and immediately affected by this emergency," said Texas Wildlife Association CEO Justin Dreibelbis.

"Michigan Farm Bureau thanks President Trump and Secretary Rollins for this critical investment. Protecting the US livestock industry from the Screwworm pest is of upmost importance to our producers, and we look forward to continuing to engage with the Administration in this effort," said Michigan Farm Bureau National Legislative Counsel Jacob Smith.

"Texas Farm Bureau commends Secretary Rollins and the Trump Administration for recognizing the gravity of this issue and taking bold steps to address it. We look forward to continuing our work with them and other stakeholders to advance solutions that protect livestock and wildlife producers, consumers, and the economic vitality of our state," said Texas Farm Bureau President Russell Boening.

"With the approach of the New World Screwworm threatening Texas, I applaud the efforts of Secretary Rollins and the Trump administration to bring the weight of the Federal Government to the battle. The future of livestock production in Texas is at risk. It is encouraging to have the USDA and other federal assets come join our farmers and ranchers in meeting this challenge," said Texas State Representative Stan Kitzman.

"We are thankful to Secretary Brooke Rollins and her team at USDA for their continued support and commitment to our farmers and ranchers. Their efforts to prioritize livestock producers to take swift action against the New World Screwworm is essential to safeguarding the health of our livestock and wildlife," said South Carolina Farm Bureau Federation National Affairs and Commodity Coordinator Dwight Cauthen.

"Today's announcement from Secretary Rollins to fund the construction of a sterile fly production facility in Mission reflects her commitment to planning, preparing and protecting the U.S. cattle herd from New World Screwworm. This announcement is sincerely appreciated by TCFA as the sterile insect technique is the only proven way to eradicate New World Screwworm. We commend President Trump, Secretary Rollins and APHIS Administrator Michael Watson for their continuous dedication to using science-based information to make decisions to protect not only our cattle herd but also ensure supply chain stability," said Texas Cattle Feeders Association Chairman Robby Kirkland.

"Pennsylvania Farm Bureau is grateful for USDA Secretary Rollins and this Administration's work to combat invasive species like the New World Screwworm to protect the health and well-being of our livestock. This announcement today emphasizes the commitment from USDA to prioritize animal health and biosecurity," said Pennsylvania Farm Bureau President Chris Hoffman.

"Screwworms pose a severe threat to livestock, particularly the sheep and goat industry, and the Texas Sheep and Goat Raisers Association appreciates the efforts of Secretary Rollins to help address this issue. TSGRA supports all efforts to provide surveillance for screwworm flies, offer technical assistance to producers as needed, and immediately expand sterile fly production and distribution centers in the U.S., Mexico, and Central America as necessary," said Texas Sheep & Goat Raisers Association President Sharon Pfluger Holman.

"The Texas Animal Health Commission commends Secretary Rollins and Governor Abbott's critical action in expanding New World screwworm eradication efforts. The sterile insect technique combined with animal health response plans, that include science based approaches and producer engagement, are key factors in ensuring continuity of Texas animal agriculture businesses and promoting overall animal health and productivity. Today's announcement bolsters the ongoing collaborative efforts between the USDA and Texas animal health officials to serve as the first line of defense in protecting U.S. animal agriculture," said Texas Animal Health Commission Executive Director and State Veterinarian Dr. Lewis R. "Bud" Dinges, DVM.

"The threat of screwworm infestation is a direct attack on Texas agriculture. Livestock consume well over 90% of Texas-grown corn, making cattle a staple market for corn farmers - many of whom include both corn and cattle in their operations. A screwworm outbreak would not only devastate the cattle industry but would also cripple the demand for Texas-grown corn. Texas Corn Producers Association appreciates USDA and Secretary Rollins' swift action against the screw worm, accelerating our ability to protect our animals and markets," said Texas Corn Producers Association Executive Vice President David Gibson.

"I commend President Trump and Secretary Rollins for their decisive action to protect Florida's cattle industry from the devastating threat of the New World Screwworm. By accelerating construction of a domestic sterile fly distribution facility, USDA is putting America's ranchers first, safeguarding our food supply, and defending the backbone of our agricultural communities. Their leadership ensures that America's cattle producers can continue to feed our nation and the world," said Representative Daniel Webster (FL-11).

"We applaud USDA Secretary Rollins for taking bold action to protect our food security from invasive pests like the New World Screwworm. This effort follows a letter we sent earlier this year encouraging the USDA to keep this parasite out of our country. The Trump Administration and congressional Republicans will always put American farmers and ranchers FIRST!" said Representative Mark Alford (MO-4).

"I am thankful to see Secretary Rollins take decisive action to combat the New World Screwworm. Building a sterile fly production facility in Edinburg, Texas, will put America first and end our reliance on other countries. Thank you, Secretary Rollins for your continued support for our farmers," said Representative Michael Guest (MS-03).

"The strong, decisive leadership of President Trump, Secretary Rollins, and USDA continues to put the farmers, ranchers, and ag producers who feed, fuel, and clothe the world first. Investing in a domestic sterile fly facility is a critical step to stop the spread of New World Screwworm. Thank you for standing with American ranchers and taking decisive action to protect American livestock. Promises made, promises kept," said Representative Tracy Mann (KS-1).

"Investing in a domestic fly facility is a necessary step to combat the spread of New World Screwworm. This decision will protect American agriculture, livestock, and our food supply. Thank you Secretary Rollins for your decisive leadership on this issue. Supporting American farmers and ranchers is another promise made, promise kept by this administration!" said Representative Mike Simpson (ID-2).

"New World Screwworm is not only a threat to livestock, but also the livelihoods of farmers and ranchers across the great state of Texas. Secretary Rollins' bold five-pronged strategy and the deployment of an $8.5 million sterile fly dispersal facility in South Texas demonstrates this administration's unwavering commitment to supporting America's agricultural producers. I look forward to continuing to work alongside the Trump administration to ensure this plan is fully implemented and our farmers and ranchers have the federal support necessary to protect their operations and America's food security," said Representative August Pfluger (TX-11).

"Texas has long led the nation's cattle industry, and it's imperative for state and federal leaders to use every tool at our disposal to protect our food supply from the destructive New World screwworm. Today's announcement of funding I supported for the USDA to combat this pest is a huge step forward, and I thank Secretary Rollins and Governor Abbott for their work and will continue to work alongside them to ensure Texas has the resources it needs to halt the spread," said Texas Senator John Cornyn.

"Agriculture and livestock are a core part of Texas economy and are how the Lone Star State feeds America and the world. I applaud Secretary Rollins for understanding the threat posed by the New World Screwworm and taking immediate action. I have been working with Secretary Rollins, Texas authorities, and my colleagues in Congress to safeguard America's livestock from this threat," said Texas Senator Ted Cruz.

"If we do not act now, the New World Screwworm could devastate Texas livestock and wildlife. Thank you, Secretary Rollins, for swiftly establishing the critical sterile fly distribution facility in Hidalgo County and delivering solutions to combat the threat posed by this parasite. I am committed to working alongside the Administration to put Texas farmers and ranchers first and safeguard our agriculture industry," said Representative Monica De La Cruz (TX-15).

"This Congress, one of my top priorities has been to strengthen our nation's preparedness against a potential screwworm outbreak. That includes the construction of a domestic fly production facility, which is a key pillar of my STOP Screwworms Act. Under Secretary Rollins' leadership of the USDA, we have made incredible strides to eliminate this dangerous parasite and protect our livestock industry. Today's historic announcement is just further proof that this administration is prioritizing our farmers and ranchers like never before. Thank you, Secretary Rollins and Governor Abbott, for always being a steadfast partner in the good fight to protect Texas' essential farmers and ranchers," said Representative Tony Gonzales (TX-23).
Background & Previous Action
Since announcing the plan in June, Secretary Rollins, USDA, and our federal and state partners have worked around the clock to keep NWS out of the United States and prepare for all contingencies in case NWS does enter the United States:

After a case of NWS was reported 370 miles south of the United States-Mexico border in July, Secretary Rollins closed southern ports of entry to livestock trade. This new northward detection came approximately two months after northern detections were reported in Oaxaca and Veracruz, less than 700 miles away from the United States border, which triggered the closure of our ports to Mexican cattle, bison, and horses on May 11, 2025.

USDA is investing $21 million to renovate an existing fruit fly production facility in Metapa, Mexico, which will provide an additional 60-100 million sterile flies. APHIS technical experts developed a comprehensive work plan and will continue to share their expertise to help Mexico bring this facility online as quickly as possible.

In June, APHIS began modifying an existing building at Moore Air Base in South Texas to establish a domestic sterile insect dispersal facility. Construction of the $8.5 million facility is on track for substantial completion at the end of 2025, with capacity to process up to 100 million flies a week, sourced from the existing production facility in Panama and, eventually, the facility USDA is helping renovate in Mexico. Importantly, this is part of our extensive contingency planning should NWS one day be detected in the United States. This facility does not produce sterile flies and will only be used if USDA deems it necessary to distribute flies in the Southern United States and northern Mexico.

USDA is rapidly exploring and seeking to validate a variety of technologies. APHIS held four public listening sessions to learn from companies, industry, academia, and the public about e-beam and x-ray technologies, potential sterile NWS strain improvements, genetically engineered flies, modular and other facilities for sterilization, and fast-tracking animal drug and treatment approvals, among other proposals. APHIS is further evaluating and validating the most promising options to help inform ongoing decision-making.

USDA leadership and technical staff at all levels continue daily collaboration with Mexico to contain NWS within its borders.

As part of a robust audit of Mexico's animal health controls, APHIS conducted site visits in June to evaluate Mexico's response and provide comprehensive feedback. As a result of inadequacies found in this audit, USDA is working diligently to help Mexico improve its surveillance, including development of a more robust trapping plan to conduct surveillance in areas of greatest priority, particularly in and around Veracruz and along the United States-Mexico border.

APHIS published an updated national disease response strategy for NWS, and is partnering with state animal and wildlife health officials to update and finalize emergency management plans. The agency is providing training and webinars for federal and state animal and wildlife officials, Tribal partners, and veterinarians.

APHIS made a number of technical and informational materials available to escalate communications and public outreach along the United States-Mexico border, particularly with veterinarians and animal owners. Materials such as pest ID cards and pest alerts raise awareness to be on the lookout for NWS. APHIS experts have held over 50 meetings with stakeholders to enlist their help and keep them informed about NWS developments, with several more upcoming webinars for members of the animal industry, vets, and state animal health officials.

USDA is leveraging Agricultural Research Service (ARS) experts to continue to develop novel treatments, preventatives, and response strategies. ARS scientists are located both in Texas at the Knipling-Bushland Livestock Insects Research Laboratory and at the Panama-United States Commission for the Eradication and Prevention of Screwworm (COPEG) facility in Panama. They are evaluating new attractants and potential trap and kill systems, improving the efficiency of sterile NWS production techniques, evaluating NWS strains, including genetically engineered strains, and developing models to predict NWS northward spread, among many other projects.

FDA has information available about current extra-label use of approved animal drugs and their role in treatment and prevention of NWS in animals.

Learn more about USDA's activities in response to New World Screwworm.

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USDA Announces Sweeping Plans to Protect the United States from New World Screwworm

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS).

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The New World Screwworm Fly is a disgusting creature sent straight from the devil himself. The average housefly is already annoying with all its buzzing and speed, however the screwworm could be described as a housefly on steroids. "Blowflies in general are cool group of insects... But their role is as decomposers. They come in, they clean up a carcass, which is a disgusting thing to think about. But somebody’s got to do it. So we’re happy they’re there and want to do that for us. But this one decided to be a little different and decided to make the carcass, which means it lays its eggs, when you’re still alive, on the body." This quote shows a comparison between the blowfly, an insect that decomposes and cleans a carcass and the screwworm, an insect that actually creates the carcass itself by finding an open wound in an animal or person and laying eggs in there. The larvae then start to eat the organism from the inside out. This comparison shows the huge difference from an average species of fly to this monster which is capable of killing full organisms. However thankfully scientist were able to come up with a temporary solution. "you’re oversaturating the wild population with these now sterile males in hopes that these males will be found by those wild females. And then, as they keep mating with the sterile males, they think that they are bred in order to lay eggs. And they do lay their eggs, but they lay eggs that don’t hatch." In more simple terms they create male screwworms in laboratories, sterilize them so they are unable to reproduce and drop them over areas infested with female screwworms. Once dropped on the female screwworms the males with mate with the females, the females will think they are bred so they can lay eggs however the males were sterile during the mating so nothing technically happened and since the females can only mate once they are now also unable to reproduce. The females not knowing the males were sterile will still lay eggs in open wounds however since no actual reproduction occurred with the males the eggs will not hatch.

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The Screwworms are considered very dangerous not only to the human health, but to the economy as well. They are known for laying their eggs on the wounds of warm-blooded animals and slowly eating their victims from the inside out. As Swiger asserts, "So they will attack a number of animals, including humans, which isn't common, but it can happen." This implies that the danger it could bring is not limited to animals only, but even to human bodies, regardless if it is a rare circumstance. It is important to be aware of the threat that it poses to life, as it greatly affects the living conditions of these organisms and impedes the healthiness and growth of their lives. Moreover, the fight against these flies continues up until this day as the United States Department of Agriculture announced their plans of building a facility where they could produce domestic sterile fly to combat the harmful Screwworms. As the USDA secretary affirms, "The facility, when it is up and running, would be able to produce 300 million sterile screwworm flies weekly that can 'eradicate the parasite.'" This is one of the ways to stop the spread of these flies along with using pest control, keeping track of their movement, and dropping sterile flies. In this way, the scientist could minimize the threat and danger pose by these harmful flies to the living organism's health as well as the industrial sector.

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"It was. When I was in grad school, it’s like one of our shining lights. Ooh, look what we did as entomologists and veterinarians, we eradicated this New World screwworm, and how terrible it was, as well as a tick species that we got rid of. But they have actually come out of the textbooks. And I’m a little sad about that because I preferred them staying in black and white."

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1. I wonder if the screwworms can be used for something useful?

2. I wonder why the flies only mate once?

3. I wonder if the flies will be a bigger threat to life in the future?

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS). This announcement builds upon USDA's five-pronged plan issued in June to combat the northward spread of NWS from Mexico into the United States.

NWS is a devastating pest. When NWS fly larvae (maggots) burrow into the flesh of a living animal, they cause serious, often deadly damage to the animal. NWS can infest livestock, pets, wildlife, occasionally birds, and in rare cases, people. It is not only a threat to our ranching community - but it is a threat to our food supply and our national security.

While USDA is coordinating efforts to combat NWS, it will require continued collaboration between Federal agencies, State governments, and the private sector. That is why USDA is working alongside the U.S. Food and Drug Administration to encourage animal drug development and prioritize approvals for prevention and treatment of the pest, the U.S. Environmental Protection Agency and the U.S. Department of Energy on new innovations to enhance our ability to combat the pest with technologies, and the U.S. Customs and Border Protection to protect the United States border. The United States government will also work alongside Governors, State Agriculture Commissioners, State veterinarians, and others to combat this pest.

As part of this comprehensive approach, USDA is taking the following immediate actions:
1.) Innovate Our Way to Eradication
While sterile flies are currently the most effective way to prevent the spread of NWS, technology continues to evolve and as such USDA will provide up to $100 million to invest in viable innovations which could show rapid advancement of promising technologies that will augment the United States facility and accelerate the pace of sterile fly production if proven successful. USDA will support proven concepts that only require funding to scale and implement as well as a number of longer-term research projects focused on: new sterile NWS production techniques, novel NWS traps and lures, NWS therapeutics that could be stockpiled and used should NWS reach the United States, and any other tools to bolster preparedness or response to NWS.
2.) Protect the United States Border - Construction of a Domestic Sterile Screwworm Production Facility
USDA will construct a sterile fly production facility in Edinburg, TX, at Moore Air Force Base, an ideal location due to the existing infrastructure and proximity to the United States-Mexico border. Built with the Army Corps of Engineers, the facility will produce up to 300 million sterile flies per week to combat NWS. This will be the only United States-based sterile fly facility and will work in tandem with facilities in Panama and Mexico to help eradicate the pest and protect American agriculture.
Why it matters:

National Security & Economic Impact - NWS threatens over $100 billion in United States economic activity tied to the cattle and livestock industry alone.

Proven Technology - Uses sterile insect technique (SIT)

Strategic Coverage - Complements Panama's facility (100M flies/week) and Mexico's upcoming facility (100M flies/week) to push NWS back toward the Darien Gap.

Reduced Vulnerability - Ends the United States-based reliance on foreign facilities for sterile fly production.

3.) Wildlife Migration Prevention
Animals don't know borders, and that leaves the U.S potentially vulnerable to NWS from wildlife migrating across the border. USDA is working aggressively to ramp up the hiring of USDA-employed mounted patrol officers, known as "Tick Riders," and other staff who will focus on border surveillance. The Tick Riders, who are mounted on horseback, will be complemented by other animal health experts who will patrol the border in vehicles and will provide the first line of defense against an NWS outbreak along the United States-Mexico border.

USDA will also begin training detector dogs to detect screwworm infestations in livestock and other animals along our border and at various ports of entry. These dogs will be essential to help control the spread of the NWS. USDA is working closely with the U.S. Department of the Interior and the U.S Customs and Border Protection to monitor the border for NWS-infected wildlife that could pose a threat to the United States.
4.) Stop the Pest from Spreading in Mexico and Ensure We Are Full Partners in Eradication
USDA Animal and Plant Health Inspection Service (APHIS) is working in collaboration with the National Service of Agri-Food Health, Safety and Quality (SENASICA) in Mexico to help them contain the pest south of the United States border by enhancing United States oversight, surveillance, improving case reporting, locking down animal movement to prevent further spread, providing traps, lures, training, and verification of Mexican NWS activities. Successful implementation will inform any future trade decisions impacting cattle movements on the southern border including the potential reopening of border areas.
5.) United States Food Safety is of Utmost Importance
To date, NWS has not been reported or detected in the United States in animals. USDA's Food Safety and Inspection Service inspects animals and carcasses at slaughter, including for NWS to keep the food supply safe.

"We have assessed the information on the ground in Mexico and have determined we must construct an additional sterile fly production facility in the United States to stop the northward advancement of this terrible pest that is threatening American cattle production. President Trump has made it clear that we must take all necessary steps to protect our country from foreign pests and diseases that threaten our economy and way of life. Today we are announcing a major investment to further America's existential role in protecting our country and secure our borders from this national security threat," said Secretary Brooke Rollins. "The construction of a domestic sterile fly production facility will ensure the United States continues to lead the way in combating this devastating pest. If our ranchers are overrun by foreign pests, then we cannot feed ourselves. USDA and Customs and Border Protection are constantly monitoring our ports of entry to keep NWS away from our borders. We are working every day to ensure our American agricultural industry is safe, secure, and resilient."

"Texas agricultural producers feed the world, with our state's food and agriculture sector supporting over 2 million well-paying jobs and creating over $867 billion in total economic impact," said Texas Greg Governor Abbott. "All of this is at risk because of the New World screwworm. Working with Secretary Rollins and members of the agricultural community nationwide, we will combat the threat from the New World screwworm right here in Texas through the building of a new facility to breed hundreds of millions of sterile New World screwworm flies. Together, we will eradicate the threat from the New World screwworm to protect our nation's food supply and economy."

"These actions - along with the FDA's efforts to facilitate meaningful treatments - represent an early, proactive, and precautionary approach," said FDA Commissioner Dr. Marty Makary, M.D., M.P.H.

"I applaud Secretary Rollins and the USDA team for taking aggressive action to combat the New World Screwworm. In June, my colleagues and I urged the Secretary to build a domestic sterile fly facility, and I'm encouraged to see that priority reflected in USDA's expanded plan. Protecting America's livestock from this dangerous pest is critical to safeguarding our food supply, supporting farmers and ranchers, and strengthening our nation's food security," said House Agriculture Committee Chairman, Representative Glenn "GT" Thompson (PA-15).

"This is exactly the kind of forward-looking investment we need to defend our food supply and livestock industry from foreign biological threats. With a new sterile fly facility on U.S. soil, stronger surveillance at the border, and real coordination between federal, state, and local partners, we're showing what it looks like to combat the spread of the New World Screwworm. I applaud Secretary Rollins and the Trump administration for their swift action to protect American farmers, ranchers, and taxpayers," said House Appropriations Agriculture Subcommittee Chairman, Representative Dr. Andy Harris (MD-1).

"This is bold, decisive action to protect American livestock from the threat of New World screwworm. I commend Secretary Rollins for prioritizing a domestic sterile fly production facility in South Texas and expanding key risk mitigation efforts. These steps will greatly strengthen our preparedness, and I look forward to continuing to work with her to eradicate this dangerous pest," said Senate Committee on Agriculture, Nutrition, and Forestry Chairman, Arkansas Senator John Boozman.

"As a livestock veterinarian by trade, I understand the risk posed to our food system by foreign animal diseases. As a livestock producer and Governor of America's leading beef producing state, I know that food security is national security. I commend Secretary Brooke Rollins and her team for their extraordinary leadership on fighting foreign animal diseases. They have been at the tip of the spear from the start, and this plan is another example of their diligence and leadership," said Nebraska Governor Jim Pillen.

"I appreciate Secretary Rollins continued support of our nation's Ag producers. This announcement doubles-down on the USDA's efforts to help feed American families. Oklahoma's ranchers and producers help feed the world and this action-first effort is a step in the right direction to keep the industry moving forward both in Oklahoma and nationwide," said Oklahoma Governor Kevin Stitt.

"I support USDA's proactive efforts to combat the potential spread of New World Screwworm in the United State. The construction of the domestic sterile fly facility in Texas represents a significant step forward in the battle to protect Alabama's livestock industry from this threat," said Alabama Commissioner of Agriculture and Industries Rick Pate.

"It took decades to eradicate this parasite from within and adjacent to our borders more than a generation ago, and this is a proactive first step. Cattle markets are already volatile and the introduction of New World screwworm within the U.S. would only increase that volatility. We thank USDA and Secretary Rollins for her leadership protecting the domestic cattle industry and we stand ready to help ensure the speedy and efficient construction of this facility and implementation of the updated plan," said American Farm Bureau Federation President Zippy Duvall.

"National Association of State Departments of Agriculture (NASDA) is grateful for USDA's investment in defending the U.S. against an outbreak of New World screwworm. NASDA is always committed to working with intergovernmental agencies and industry stakeholders to foster a collaborative approach to animal health initiatives," said National Association of State Departments of Agriculture CEO Ted McKinney.

"American cattle producers are thankful for Secretary Brooke Rollins' leadership and diligence in combatting the spread of New World screwworm. This deadly pest has negatively impacted the cattle industry before but with swift action from Secretary Rollins, we are on our way to stopping it again. USDA's work in building a sterile fly production facility at Moore Air Base will greatly help to stop the spread of screwworm and protect the American cattle herd for years to come," said National Cattlemen's Beef Association CEO Colin Woodall.

"Virginia may be far from the border, but we understand the threat the New World Screwworm poses to the livestock industry and animal health if it were to enter the United States. The announcement of a new sterile fly production facility in Texas marks a major investment that will strengthen our biosecurity infrastructure and safeguard livestock producers across the country. We are grateful to the Administration for their continued dedication to agricultural innovation and animal health," said Virginia Farm Bureau President Scott Sink.

"We're incredibly grateful to President Trump and Secretary Rollins for securing the necessary funding for a domestic production facility to combat New World Screwworm (NWS). When NWS entered the country decades ago, it was devastating to the cattle industry. This new facility is necessary and will be invaluable in the fight to protect American livestock," said Kentucky Farm Bureau President Eddie Melton.

"On behalf of livestock producers across Tennessee, we thank President Trump and Secretary Rollins for fully funding a domestic fly production facility to combat New World Screwworm. Protecting America's livestock is critical in protecting the larger food supply we all depend on, and we appreciate the Trump Administration for taking swift action to combat this threat," said Tennessee Farm Bureau President Eric Mayberry.

"On behalf of Florida's farm families, I want to thank President Donald Trump and Agriculture Secretary Brooke Rollins for their leadership in fully funding a new sterile fly production facility at Moore Air Base in Edinburg, Texas. This investment represents a historic commitment to safeguarding American agriculture from the threat of the New World screwworm," said Florida Farm Bureau Federation President Jeb S. Smith.

"The New World screwworm devastated deer and livestock populations in Texas in the 50's and 60's. Landowners that lived through that nightmare will do everything possible to prevent the same thing from happening again. But they need help desperately, and the USDA is the best partner to provide that help. The Texas Chapter of The Wildlife Society supports their efforts 100% and thanks Secretary Rollins and Governor Abbott for leading the charge," said Executive Director Texas Chapter of The Wildlife Society Matt Wagner Ph.D.

"We appreciate Secretary Rollins' commitment to protecting American livestock and the livelihood of American farmers and ranchers. It is imperative that we have a production facility in the United States to combat the New World Screwworm. She worked tirelessly to make this happen. Alabama farmers and ranchers thank Secretary Rollins and President Trump for their quick and decisive response to this destructive pest," said Alabama Farmers Federation President Jimmy Parnel.

"We commend and thank President Trump and Sec. Rollins for recognizing the importance of working to eradicate NWS. If this were not done, the impact on our domestic industry could be tragic," said South Dakota Farm Bureau President Scott VanderWal.

"Louisiana farmers and ranchers thank President Donald J. Trump and U.S. Secretary of Agriculture Brooke Rollins for making this sterile fly facility a top priority. For Louisiana's cattle, equine, sheep, and goat producers, this facility is not just an agricultural milestone-it's a shield for our way of life. Livestock production is a cornerstone of rural communities in our state and ensuring that we have the resources to prevent and respond to NWS infestations is vital to maintaining both animal welfare and economic stability," said Louisiana Farm Bureau President Richard Fontenot.

"The Texas Parks and Wildlife Department (TPWD) supports the efforts of Secretary Rollins and Governor Abbott to ensure we have the appropriate tools to combat the New World screwworm pest that is a looming threat to Texas livestock and wildlife. Developing a sterile fly production facility in South Texas is a critical step in ensuring the long-term health and sustainability of white-tailed deer and other wildlife enjoyed by many Texans. We appreciate the foresight and commitment by Secretary Rollins and Governor Abbott to make the fly production facility a reality, and we stand ready to assist in combating this threat alongside our partners," said Texas Parks and Wildlife Department Executive Director Dr. David Yoskowitz.

"We applaud the Trump Administration for making this issue a top priority on behalf of Mississippi's and our nation's livestock producers. The federal investment announced today will better equip our frontline defense against the catastrophic destruction this pest can cause. We thank USDA Secretary Brooke Rollins and her team for their expeditious work in addressing the concerns of the agricultural industry and urge their continued research on all mitigation efforts to battle this devastating pest," said Mississippi Farm Bureau Federation President Mike McCormick.

"The importance of equipping the U.S. to combat the threat of New World screwworm cannot be overstated. As Texans and cattle producers, we welcome the placement of the sterile fly production facility at Moore Airfield Base, putting it on the front lines of this critical fight. Increasing sterile fly production has long been a priority for the Texas cattle industry, which contributes $13 billion to our state's economy annually. We remain committed to supporting both state and federal efforts to manage this threat and deeply appreciate the leadership of Secretary Rollins, the administration and Governor Abbott in prioritizing the needs of Texas and U.S. production agriculture," said Texas & Southwestern Cattle Raisers Association President Carl Ray Polk, Jr.

"The New World Screwworm is like something straight out of a horror film and poses a serious threat to Texas agriculture, affecting livestock, wildlife, and pets. I appreciate USDA Secretary Brooke Rollins's strong leadership and her visit to Texas to deliver this important announcement. Her presence highlights her understanding of the seriousness of this issue and her ongoing dedication to supporting our agricultural producers. Our strong partnership with the USDA remains vital in addressing this challenge effectively. United, we will protect this essential industry. Texas is resilient, and the Texas Department of Agriculture is committed to stopping this threat," said Texas Agriculture Commissioner Sid Miller.

"The New Mexico Farm & Livestock Bureau strongly supports USDA's investment in a domestic sterile fly facility to combat the New World Screw Worm. This proactive step will protect livestock health, safeguard rural economies, and strengthen America's ability to respond quickly to future outbreak," said New Mexico Farm and Livestock Bureau Director of Government Affairs Becca Luten.

"The Texas Wildlife Association and its members applaud Secretary Rollins and the Trump Administration for taking meaningful action to safeguard human and animal health, our rural economies and way of life, from the growing threat of the New World Screwworm. Today's announcement of a sterile fly production facility in South Texas is welcome news to the landowners, wildlife managers and sportsmen most directly and immediately affected by this emergency," said Texas Wildlife Association CEO Justin Dreibelbis.

"Michigan Farm Bureau thanks President Trump and Secretary Rollins for this critical investment. Protecting the US livestock industry from the Screwworm pest is of upmost importance to our producers, and we look forward to continuing to engage with the Administration in this effort," said Michigan Farm Bureau National Legislative Counsel Jacob Smith.

"Texas Farm Bureau commends Secretary Rollins and the Trump Administration for recognizing the gravity of this issue and taking bold steps to address it. We look forward to continuing our work with them and other stakeholders to advance solutions that protect livestock and wildlife producers, consumers, and the economic vitality of our state," said Texas Farm Bureau President Russell Boening.

"With the approach of the New World Screwworm threatening Texas, I applaud the efforts of Secretary Rollins and the Trump administration to bring the weight of the Federal Government to the battle. The future of livestock production in Texas is at risk. It is encouraging to have the USDA and other federal assets come join our farmers and ranchers in meeting this challenge," said Texas State Representative Stan Kitzman.

"We are thankful to Secretary Brooke Rollins and her team at USDA for their continued support and commitment to our farmers and ranchers. Their efforts to prioritize livestock producers to take swift action against the New World Screwworm is essential to safeguarding the health of our livestock and wildlife," said South Carolina Farm Bureau Federation National Affairs and Commodity Coordinator Dwight Cauthen.

"Today's announcement from Secretary Rollins to fund the construction of a sterile fly production facility in Mission reflects her commitment to planning, preparing and protecting the U.S. cattle herd from New World Screwworm. This announcement is sincerely appreciated by TCFA as the sterile insect technique is the only proven way to eradicate New World Screwworm. We commend President Trump, Secretary Rollins and APHIS Administrator Michael Watson for their continuous dedication to using science-based information to make decisions to protect not only our cattle herd but also ensure supply chain stability," said Texas Cattle Feeders Association Chairman Robby Kirkland.

"Pennsylvania Farm Bureau is grateful for USDA Secretary Rollins and this Administration's work to combat invasive species like the New World Screwworm to protect the health and well-being of our livestock. This announcement today emphasizes the commitment from USDA to prioritize animal health and biosecurity," said Pennsylvania Farm Bureau President Chris Hoffman.

"Screwworms pose a severe threat to livestock, particularly the sheep and goat industry, and the Texas Sheep and Goat Raisers Association appreciates the efforts of Secretary Rollins to help address this issue. TSGRA supports all efforts to provide surveillance for screwworm flies, offer technical assistance to producers as needed, and immediately expand sterile fly production and distribution centers in the U.S., Mexico, and Central America as necessary," said Texas Sheep & Goat Raisers Association President Sharon Pfluger Holman.

"The Texas Animal Health Commission commends Secretary Rollins and Governor Abbott's critical action in expanding New World screwworm eradication efforts. The sterile insect technique combined with animal health response plans, that include science based approaches and producer engagement, are key factors in ensuring continuity of Texas animal agriculture businesses and promoting overall animal health and productivity. Today's announcement bolsters the ongoing collaborative efforts between the USDA and Texas animal health officials to serve as the first line of defense in protecting U.S. animal agriculture," said Texas Animal Health Commission Executive Director and State Veterinarian Dr. Lewis R. "Bud" Dinges, DVM.

"The threat of screwworm infestation is a direct attack on Texas agriculture. Livestock consume well over 90% of Texas-grown corn, making cattle a staple market for corn farmers - many of whom include both corn and cattle in their operations. A screwworm outbreak would not only devastate the cattle industry but would also cripple the demand for Texas-grown corn. Texas Corn Producers Association appreciates USDA and Secretary Rollins' swift action against the screw worm, accelerating our ability to protect our animals and markets," said Texas Corn Producers Association Executive Vice President David Gibson.

"I commend President Trump and Secretary Rollins for their decisive action to protect Florida's cattle industry from the devastating threat of the New World Screwworm. By accelerating construction of a domestic sterile fly distribution facility, USDA is putting America's ranchers first, safeguarding our food supply, and defending the backbone of our agricultural communities. Their leadership ensures that America's cattle producers can continue to feed our nation and the world," said Representative Daniel Webster (FL-11).

"We applaud USDA Secretary Rollins for taking bold action to protect our food security from invasive pests like the New World Screwworm. This effort follows a letter we sent earlier this year encouraging the USDA to keep this parasite out of our country. The Trump Administration and congressional Republicans will always put American farmers and ranchers FIRST!" said Representative Mark Alford (MO-4).

"I am thankful to see Secretary Rollins take decisive action to combat the New World Screwworm. Building a sterile fly production facility in Edinburg, Texas, will put America first and end our reliance on other countries. Thank you, Secretary Rollins for your continued support for our farmers," said Representative Michael Guest (MS-03).

"The strong, decisive leadership of President Trump, Secretary Rollins, and USDA continues to put the farmers, ranchers, and ag producers who feed, fuel, and clothe the world first. Investing in a domestic sterile fly facility is a critical step to stop the spread of New World Screwworm. Thank you for standing with American ranchers and taking decisive action to protect American livestock. Promises made, promises kept," said Representative Tracy Mann (KS-1).

"Investing in a domestic fly facility is a necessary step to combat the spread of New World Screwworm. This decision will protect American agriculture, livestock, and our food supply. Thank you Secretary Rollins for your decisive leadership on this issue. Supporting American farmers and ranchers is another promise made, promise kept by this administration!" said Representative Mike Simpson (ID-2).

"New World Screwworm is not only a threat to livestock, but also the livelihoods of farmers and ranchers across the great state of Texas. Secretary Rollins' bold five-pronged strategy and the deployment of an $8.5 million sterile fly dispersal facility in South Texas demonstrates this administration's unwavering commitment to supporting America's agricultural producers. I look forward to continuing to work alongside the Trump administration to ensure this plan is fully implemented and our farmers and ranchers have the federal support necessary to protect their operations and America's food security," said Representative August Pfluger (TX-11).

"Texas has long led the nation's cattle industry, and it's imperative for state and federal leaders to use every tool at our disposal to protect our food supply from the destructive New World screwworm. Today's announcement of funding I supported for the USDA to combat this pest is a huge step forward, and I thank Secretary Rollins and Governor Abbott for their work and will continue to work alongside them to ensure Texas has the resources it needs to halt the spread," said Texas Senator John Cornyn.

"Agriculture and livestock are a core part of Texas economy and are how the Lone Star State feeds America and the world. I applaud Secretary Rollins for understanding the threat posed by the New World Screwworm and taking immediate action. I have been working with Secretary Rollins, Texas authorities, and my colleagues in Congress to safeguard America's livestock from this threat," said Texas Senator Ted Cruz.

"If we do not act now, the New World Screwworm could devastate Texas livestock and wildlife. Thank you, Secretary Rollins, for swiftly establishing the critical sterile fly distribution facility in Hidalgo County and delivering solutions to combat the threat posed by this parasite. I am committed to working alongside the Administration to put Texas farmers and ranchers first and safeguard our agriculture industry," said Representative Monica De La Cruz (TX-15).

"This Congress, one of my top priorities has been to strengthen our nation's preparedness against a potential screwworm outbreak. That includes the construction of a domestic fly production facility, which is a key pillar of my STOP Screwworms Act. Under Secretary Rollins' leadership of the USDA, we have made incredible strides to eliminate this dangerous parasite and protect our livestock industry. Today's historic announcement is just further proof that this administration is prioritizing our farmers and ranchers like never before. Thank you, Secretary Rollins and Governor Abbott, for always being a steadfast partner in the good fight to protect Texas' essential farmers and ranchers," said Representative Tony Gonzales (TX-23).
Background & Previous Action
Since announcing the plan in June, Secretary Rollins, USDA, and our federal and state partners have worked around the clock to keep NWS out of the United States and prepare for all contingencies in case NWS does enter the United States:

After a case of NWS was reported 370 miles south of the United States-Mexico border in July, Secretary Rollins closed southern ports of entry to livestock trade. This new northward detection came approximately two months after northern detections were reported in Oaxaca and Veracruz, less than 700 miles away from the United States border, which triggered the closure of our ports to Mexican cattle, bison, and horses on May 11, 2025.

USDA is investing $21 million to renovate an existing fruit fly production facility in Metapa, Mexico, which will provide an additional 60-100 million sterile flies. APHIS technical experts developed a comprehensive work plan and will continue to share their expertise to help Mexico bring this facility online as quickly as possible.

In June, APHIS began modifying an existing building at Moore Air Base in South Texas to establish a domestic sterile insect dispersal facility. Construction of the $8.5 million facility is on track for substantial completion at the end of 2025, with capacity to process up to 100 million flies a week, sourced from the existing production facility in Panama and, eventually, the facility USDA is helping renovate in Mexico. Importantly, this is part of our extensive contingency planning should NWS one day be detected in the United States. This facility does not produce sterile flies and will only be used if USDA deems it necessary to distribute flies in the Southern United States and northern Mexico.

USDA is rapidly exploring and seeking to validate a variety of technologies. APHIS held four public listening sessions to learn from companies, industry, academia, and the public about e-beam and x-ray technologies, potential sterile NWS strain improvements, genetically engineered flies, modular and other facilities for sterilization, and fast-tracking animal drug and treatment approvals, among other proposals. APHIS is further evaluating and validating the most promising options to help inform ongoing decision-making.

USDA leadership and technical staff at all levels continue daily collaboration with Mexico to contain NWS within its borders.

As part of a robust audit of Mexico's animal health controls, APHIS conducted site visits in June to evaluate Mexico's response and provide comprehensive feedback. As a result of inadequacies found in this audit, USDA is working diligently to help Mexico improve its surveillance, including development of a more robust trapping plan to conduct surveillance in areas of greatest priority, particularly in and around Veracruz and along the United States-Mexico border.

APHIS published an updated national disease response strategy for NWS, and is partnering with state animal and wildlife health officials to update and finalize emergency management plans. The agency is providing training and webinars for federal and state animal and wildlife officials, Tribal partners, and veterinarians.

APHIS made a number of technical and informational materials available to escalate communications and public outreach along the United States-Mexico border, particularly with veterinarians and animal owners. Materials such as pest ID cards and pest alerts raise awareness to be on the lookout for NWS. APHIS experts have held over 50 meetings with stakeholders to enlist their help and keep them informed about NWS developments, with several more upcoming webinars for members of the animal industry, vets, and state animal health officials.

USDA is leveraging Agricultural Research Service (ARS) experts to continue to develop novel treatments, preventatives, and response strategies. ARS scientists are located both in Texas at the Knipling-Bushland Livestock Insects Research Laboratory and at the Panama-United States Commission for the Eradication and Prevention of Screwworm (COPEG) facility in Panama. They are evaluating new attractants and potential trap and kill systems, improving the efficiency of sterile NWS production techniques, evaluating NWS strains, including genetically engineered strains, and developing models to predict NWS northward spread, among many other projects.

FDA has information available about current extra-label use of approved animal drugs and their role in treatment and prevention of NWS in animals.

Learn more about USDA's activities in response to New World Screwworm.

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USDA Announces Sweeping Plans to Protect the United States from New World Screwworm

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS).

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The New World Screwworm fly (NWS) is a threat to North America and they have to be stopped. The NWS is "notorious for laying eggs in the wounds of animals and slowly eating its victims from the inside out." This poses a threat to the agriculture and food production industry because the fly spreads disease. The fly was "successfully eradicated from the US decades ago, but has recently been moving north from South America into Central America and Mexico, with concerns that it may cross the border into Texas." The flies have been moving north because of better weather, they don't do well in areas where it can get cold and the southwest typically has mild winters. The good news is that scientists had identified the problem and are already coming up with solutions to stop the fly from reaching the United States. One of the solutions is to sterilize males by radiating them in a lab and sending the flies to places where wild ones live. Radiating the males makes them unable to produce eggs with the females and since the NWS only mates once in their lives, the population will shrink. This process started in the 1950s so scientists have been able to refine and ensure that there won't be any consequences for other life for sending flies to wild areas.

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1. Screwworm was eradicated from the US back in the 70s, but nowadays it has increased and it has been moving further north into Central America and Mexico, going towards the US border.

2. Those flies lay their eggs in all warm-blooded animals.

3. Scientists started to manage these flies around the 1930s to 50s.

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"Yeah, and that's what happens, right? We do so good, and we clear things up. But then we forget to talk about them in the future. And then people forget what they are. And I know that right now, education is definitely a very important tool that we can use to our effects, because we need to tell people what this thing does and have them prepared."

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1. I wonder how those flies started to exist,

2. I wonder now that science is more advanced, could scientists find a way to kill screwworms?

3. I wonder if other continents have the same issue, and if they are worse?

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Another screwworm incursion inevitable, experts warn - The Wildlife Society

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Parasitic fly larvae that feed on open wounds of mammals and birds could have devastating impacts on wildlife and cattle in the southwest

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The New World Screwworm is a fly that is known to be "notorious for laying eggs in the wound of animals and slowly eating its victims from the inside out." This could be dangerous for other animals, as those flies spread diseases and can contaminate other animals, including humans. According to Sonja Swiger, "So they will attack a number of animals, including humans, which isn't common, but it can happen." This shows the danger that it could bring to the lives of humans. In this situation, it is important for those people who live in the areas that are most affected by the flies to know the threats they pose. Those flies have also been moving, since they do not do well in cold temperatures, which could impact more places and animals. Scientists have been looking for a solution and have already found one in the 1930s to the 1950s. The first solution includes radiating the flies and making them unable to have offspring. In the solution, it would make it impossible for the males to produce eggs with the females, and that would cause the population to shrink. Since those flies do not play a crucial role in the ecosystem, their removal would not impact anything and could save the lives of many animals and humans.

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New World screwworm (NWS) is a species of parasitic flies that feed on live tissue.

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"it’s just lack of education. And most folks don’t anything about it. I mean, I didn’t learn about it until I was in grad school to be an entomologist. So it is kind of like out of a sci-fi movie because it’s such a freaky insect that you think, this can’t be real. But it is real."

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1. I wonder how these pest resurfaced after being eradicated from the U.S decades ago.

2. I wonder why these pests started laying eggs in animals so they wouldn't have to take care of their young.

3. I wonder if humans could find a cure or type of treatment in the case of these pests infecting them.

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS). This announcement builds upon USDA's five-pronged plan issued in June to combat the northward spread of NWS from Mexico into the United States.

NWS is a devastating pest. When NWS fly larvae (maggots) burrow into the flesh of a living animal, they cause serious, often deadly damage to the animal. NWS can infest livestock, pets, wildlife, occasionally birds, and in rare cases, people. It is not only a threat to our ranching community - but it is a threat to our food supply and our national security.

While USDA is coordinating efforts to combat NWS, it will require continued collaboration between Federal agencies, State governments, and the private sector. That is why USDA is working alongside the U.S. Food and Drug Administration to encourage animal drug development and prioritize approvals for prevention and treatment of the pest, the U.S. Environmental Protection Agency and the U.S. Department of Energy on new innovations to enhance our ability to combat the pest with technologies, and the U.S. Customs and Border Protection to protect the United States border. The United States government will also work alongside Governors, State Agriculture Commissioners, State veterinarians, and others to combat this pest.

As part of this comprehensive approach, USDA is taking the following immediate actions:
1.) Innovate Our Way to Eradication
While sterile flies are currently the most effective way to prevent the spread of NWS, technology continues to evolve and as such USDA will provide up to $100 million to invest in viable innovations which could show rapid advancement of promising technologies that will augment the United States facility and accelerate the pace of sterile fly production if proven successful. USDA will support proven concepts that only require funding to scale and implement as well as a number of longer-term research projects focused on: new sterile NWS production techniques, novel NWS traps and lures, NWS therapeutics that could be stockpiled and used should NWS reach the United States, and any other tools to bolster preparedness or response to NWS.
2.) Protect the United States Border - Construction of a Domestic Sterile Screwworm Production Facility
USDA will construct a sterile fly production facility in Edinburg, TX, at Moore Air Force Base, an ideal location due to the existing infrastructure and proximity to the United States-Mexico border. Built with the Army Corps of Engineers, the facility will produce up to 300 million sterile flies per week to combat NWS. This will be the only United States-based sterile fly facility and will work in tandem with facilities in Panama and Mexico to help eradicate the pest and protect American agriculture.
Why it matters:

National Security & Economic Impact - NWS threatens over $100 billion in United States economic activity tied to the cattle and livestock industry alone.

Proven Technology - Uses sterile insect technique (SIT)

Strategic Coverage - Complements Panama's facility (100M flies/week) and Mexico's upcoming facility (100M flies/week) to push NWS back toward the Darien Gap.

Reduced Vulnerability - Ends the United States-based reliance on foreign facilities for sterile fly production.

3.) Wildlife Migration Prevention
Animals don't know borders, and that leaves the U.S potentially vulnerable to NWS from wildlife migrating across the border. USDA is working aggressively to ramp up the hiring of USDA-employed mounted patrol officers, known as "Tick Riders," and other staff who will focus on border surveillance. The Tick Riders, who are mounted on horseback, will be complemented by other animal health experts who will patrol the border in vehicles and will provide the first line of defense against an NWS outbreak along the United States-Mexico border.

USDA will also begin training detector dogs to detect screwworm infestations in livestock and other animals along our border and at various ports of entry. These dogs will be essential to help control the spread of the NWS. USDA is working closely with the U.S. Department of the Interior and the U.S Customs and Border Protection to monitor the border for NWS-infected wildlife that could pose a threat to the United States.
4.) Stop the Pest from Spreading in Mexico and Ensure We Are Full Partners in Eradication
USDA Animal and Plant Health Inspection Service (APHIS) is working in collaboration with the National Service of Agri-Food Health, Safety and Quality (SENASICA) in Mexico to help them contain the pest south of the United States border by enhancing United States oversight, surveillance, improving case reporting, locking down animal movement to prevent further spread, providing traps, lures, training, and verification of Mexican NWS activities. Successful implementation will inform any future trade decisions impacting cattle movements on the southern border including the potential reopening of border areas.
5.) United States Food Safety is of Utmost Importance
To date, NWS has not been reported or detected in the United States in animals. USDA's Food Safety and Inspection Service inspects animals and carcasses at slaughter, including for NWS to keep the food supply safe.

"We have assessed the information on the ground in Mexico and have determined we must construct an additional sterile fly production facility in the United States to stop the northward advancement of this terrible pest that is threatening American cattle production. President Trump has made it clear that we must take all necessary steps to protect our country from foreign pests and diseases that threaten our economy and way of life. Today we are announcing a major investment to further America's existential role in protecting our country and secure our borders from this national security threat," said Secretary Brooke Rollins. "The construction of a domestic sterile fly production facility will ensure the United States continues to lead the way in combating this devastating pest. If our ranchers are overrun by foreign pests, then we cannot feed ourselves. USDA and Customs and Border Protection are constantly monitoring our ports of entry to keep NWS away from our borders. We are working every day to ensure our American agricultural industry is safe, secure, and resilient."

"Texas agricultural producers feed the world, with our state's food and agriculture sector supporting over 2 million well-paying jobs and creating over $867 billion in total economic impact," said Texas Greg Governor Abbott. "All of this is at risk because of the New World screwworm. Working with Secretary Rollins and members of the agricultural community nationwide, we will combat the threat from the New World screwworm right here in Texas through the building of a new facility to breed hundreds of millions of sterile New World screwworm flies. Together, we will eradicate the threat from the New World screwworm to protect our nation's food supply and economy."

"These actions - along with the FDA's efforts to facilitate meaningful treatments - represent an early, proactive, and precautionary approach," said FDA Commissioner Dr. Marty Makary, M.D., M.P.H.

"I applaud Secretary Rollins and the USDA team for taking aggressive action to combat the New World Screwworm. In June, my colleagues and I urged the Secretary to build a domestic sterile fly facility, and I'm encouraged to see that priority reflected in USDA's expanded plan. Protecting America's livestock from this dangerous pest is critical to safeguarding our food supply, supporting farmers and ranchers, and strengthening our nation's food security," said House Agriculture Committee Chairman, Representative Glenn "GT" Thompson (PA-15).

"This is exactly the kind of forward-looking investment we need to defend our food supply and livestock industry from foreign biological threats. With a new sterile fly facility on U.S. soil, stronger surveillance at the border, and real coordination between federal, state, and local partners, we're showing what it looks like to combat the spread of the New World Screwworm. I applaud Secretary Rollins and the Trump administration for their swift action to protect American farmers, ranchers, and taxpayers," said House Appropriations Agriculture Subcommittee Chairman, Representative Dr. Andy Harris (MD-1).

"This is bold, decisive action to protect American livestock from the threat of New World screwworm. I commend Secretary Rollins for prioritizing a domestic sterile fly production facility in South Texas and expanding key risk mitigation efforts. These steps will greatly strengthen our preparedness, and I look forward to continuing to work with her to eradicate this dangerous pest," said Senate Committee on Agriculture, Nutrition, and Forestry Chairman, Arkansas Senator John Boozman.

"As a livestock veterinarian by trade, I understand the risk posed to our food system by foreign animal diseases. As a livestock producer and Governor of America's leading beef producing state, I know that food security is national security. I commend Secretary Brooke Rollins and her team for their extraordinary leadership on fighting foreign animal diseases. They have been at the tip of the spear from the start, and this plan is another example of their diligence and leadership," said Nebraska Governor Jim Pillen.

"I appreciate Secretary Rollins continued support of our nation's Ag producers. This announcement doubles-down on the USDA's efforts to help feed American families. Oklahoma's ranchers and producers help feed the world and this action-first effort is a step in the right direction to keep the industry moving forward both in Oklahoma and nationwide," said Oklahoma Governor Kevin Stitt.

"I support USDA's proactive efforts to combat the potential spread of New World Screwworm in the United State. The construction of the domestic sterile fly facility in Texas represents a significant step forward in the battle to protect Alabama's livestock industry from this threat," said Alabama Commissioner of Agriculture and Industries Rick Pate.

"It took decades to eradicate this parasite from within and adjacent to our borders more than a generation ago, and this is a proactive first step. Cattle markets are already volatile and the introduction of New World screwworm within the U.S. would only increase that volatility. We thank USDA and Secretary Rollins for her leadership protecting the domestic cattle industry and we stand ready to help ensure the speedy and efficient construction of this facility and implementation of the updated plan," said American Farm Bureau Federation President Zippy Duvall.

"National Association of State Departments of Agriculture (NASDA) is grateful for USDA's investment in defending the U.S. against an outbreak of New World screwworm. NASDA is always committed to working with intergovernmental agencies and industry stakeholders to foster a collaborative approach to animal health initiatives," said National Association of State Departments of Agriculture CEO Ted McKinney.

"American cattle producers are thankful for Secretary Brooke Rollins' leadership and diligence in combatting the spread of New World screwworm. This deadly pest has negatively impacted the cattle industry before but with swift action from Secretary Rollins, we are on our way to stopping it again. USDA's work in building a sterile fly production facility at Moore Air Base will greatly help to stop the spread of screwworm and protect the American cattle herd for years to come," said National Cattlemen's Beef Association CEO Colin Woodall.

"Virginia may be far from the border, but we understand the threat the New World Screwworm poses to the livestock industry and animal health if it were to enter the United States. The announcement of a new sterile fly production facility in Texas marks a major investment that will strengthen our biosecurity infrastructure and safeguard livestock producers across the country. We are grateful to the Administration for their continued dedication to agricultural innovation and animal health," said Virginia Farm Bureau President Scott Sink.

"We're incredibly grateful to President Trump and Secretary Rollins for securing the necessary funding for a domestic production facility to combat New World Screwworm (NWS). When NWS entered the country decades ago, it was devastating to the cattle industry. This new facility is necessary and will be invaluable in the fight to protect American livestock," said Kentucky Farm Bureau President Eddie Melton.

"On behalf of livestock producers across Tennessee, we thank President Trump and Secretary Rollins for fully funding a domestic fly production facility to combat New World Screwworm. Protecting America's livestock is critical in protecting the larger food supply we all depend on, and we appreciate the Trump Administration for taking swift action to combat this threat," said Tennessee Farm Bureau President Eric Mayberry.

"On behalf of Florida's farm families, I want to thank President Donald Trump and Agriculture Secretary Brooke Rollins for their leadership in fully funding a new sterile fly production facility at Moore Air Base in Edinburg, Texas. This investment represents a historic commitment to safeguarding American agriculture from the threat of the New World screwworm," said Florida Farm Bureau Federation President Jeb S. Smith.

"The New World screwworm devastated deer and livestock populations in Texas in the 50's and 60's. Landowners that lived through that nightmare will do everything possible to prevent the same thing from happening again. But they need help desperately, and the USDA is the best partner to provide that help. The Texas Chapter of The Wildlife Society supports their efforts 100% and thanks Secretary Rollins and Governor Abbott for leading the charge," said Executive Director Texas Chapter of The Wildlife Society Matt Wagner Ph.D.

"We appreciate Secretary Rollins' commitment to protecting American livestock and the livelihood of American farmers and ranchers. It is imperative that we have a production facility in the United States to combat the New World Screwworm. She worked tirelessly to make this happen. Alabama farmers and ranchers thank Secretary Rollins and President Trump for their quick and decisive response to this destructive pest," said Alabama Farmers Federation President Jimmy Parnel.

"We commend and thank President Trump and Sec. Rollins for recognizing the importance of working to eradicate NWS. If this were not done, the impact on our domestic industry could be tragic," said South Dakota Farm Bureau President Scott VanderWal.

"Louisiana farmers and ranchers thank President Donald J. Trump and U.S. Secretary of Agriculture Brooke Rollins for making this sterile fly facility a top priority. For Louisiana's cattle, equine, sheep, and goat producers, this facility is not just an agricultural milestone-it's a shield for our way of life. Livestock production is a cornerstone of rural communities in our state and ensuring that we have the resources to prevent and respond to NWS infestations is vital to maintaining both animal welfare and economic stability," said Louisiana Farm Bureau President Richard Fontenot.

"The Texas Parks and Wildlife Department (TPWD) supports the efforts of Secretary Rollins and Governor Abbott to ensure we have the appropriate tools to combat the New World screwworm pest that is a looming threat to Texas livestock and wildlife. Developing a sterile fly production facility in South Texas is a critical step in ensuring the long-term health and sustainability of white-tailed deer and other wildlife enjoyed by many Texans. We appreciate the foresight and commitment by Secretary Rollins and Governor Abbott to make the fly production facility a reality, and we stand ready to assist in combating this threat alongside our partners," said Texas Parks and Wildlife Department Executive Director Dr. David Yoskowitz.

"We applaud the Trump Administration for making this issue a top priority on behalf of Mississippi's and our nation's livestock producers. The federal investment announced today will better equip our frontline defense against the catastrophic destruction this pest can cause. We thank USDA Secretary Brooke Rollins and her team for their expeditious work in addressing the concerns of the agricultural industry and urge their continued research on all mitigation efforts to battle this devastating pest," said Mississippi Farm Bureau Federation President Mike McCormick.

"The importance of equipping the U.S. to combat the threat of New World screwworm cannot be overstated. As Texans and cattle producers, we welcome the placement of the sterile fly production facility at Moore Airfield Base, putting it on the front lines of this critical fight. Increasing sterile fly production has long been a priority for the Texas cattle industry, which contributes $13 billion to our state's economy annually. We remain committed to supporting both state and federal efforts to manage this threat and deeply appreciate the leadership of Secretary Rollins, the administration and Governor Abbott in prioritizing the needs of Texas and U.S. production agriculture," said Texas & Southwestern Cattle Raisers Association President Carl Ray Polk, Jr.

"The New World Screwworm is like something straight out of a horror film and poses a serious threat to Texas agriculture, affecting livestock, wildlife, and pets. I appreciate USDA Secretary Brooke Rollins's strong leadership and her visit to Texas to deliver this important announcement. Her presence highlights her understanding of the seriousness of this issue and her ongoing dedication to supporting our agricultural producers. Our strong partnership with the USDA remains vital in addressing this challenge effectively. United, we will protect this essential industry. Texas is resilient, and the Texas Department of Agriculture is committed to stopping this threat," said Texas Agriculture Commissioner Sid Miller.

"The New Mexico Farm & Livestock Bureau strongly supports USDA's investment in a domestic sterile fly facility to combat the New World Screw Worm. This proactive step will protect livestock health, safeguard rural economies, and strengthen America's ability to respond quickly to future outbreak," said New Mexico Farm and Livestock Bureau Director of Government Affairs Becca Luten.

"The Texas Wildlife Association and its members applaud Secretary Rollins and the Trump Administration for taking meaningful action to safeguard human and animal health, our rural economies and way of life, from the growing threat of the New World Screwworm. Today's announcement of a sterile fly production facility in South Texas is welcome news to the landowners, wildlife managers and sportsmen most directly and immediately affected by this emergency," said Texas Wildlife Association CEO Justin Dreibelbis.

"Michigan Farm Bureau thanks President Trump and Secretary Rollins for this critical investment. Protecting the US livestock industry from the Screwworm pest is of upmost importance to our producers, and we look forward to continuing to engage with the Administration in this effort," said Michigan Farm Bureau National Legislative Counsel Jacob Smith.

"Texas Farm Bureau commends Secretary Rollins and the Trump Administration for recognizing the gravity of this issue and taking bold steps to address it. We look forward to continuing our work with them and other stakeholders to advance solutions that protect livestock and wildlife producers, consumers, and the economic vitality of our state," said Texas Farm Bureau President Russell Boening.

"With the approach of the New World Screwworm threatening Texas, I applaud the efforts of Secretary Rollins and the Trump administration to bring the weight of the Federal Government to the battle. The future of livestock production in Texas is at risk. It is encouraging to have the USDA and other federal assets come join our farmers and ranchers in meeting this challenge," said Texas State Representative Stan Kitzman.

"We are thankful to Secretary Brooke Rollins and her team at USDA for their continued support and commitment to our farmers and ranchers. Their efforts to prioritize livestock producers to take swift action against the New World Screwworm is essential to safeguarding the health of our livestock and wildlife," said South Carolina Farm Bureau Federation National Affairs and Commodity Coordinator Dwight Cauthen.

"Today's announcement from Secretary Rollins to fund the construction of a sterile fly production facility in Mission reflects her commitment to planning, preparing and protecting the U.S. cattle herd from New World Screwworm. This announcement is sincerely appreciated by TCFA as the sterile insect technique is the only proven way to eradicate New World Screwworm. We commend President Trump, Secretary Rollins and APHIS Administrator Michael Watson for their continuous dedication to using science-based information to make decisions to protect not only our cattle herd but also ensure supply chain stability," said Texas Cattle Feeders Association Chairman Robby Kirkland.

"Pennsylvania Farm Bureau is grateful for USDA Secretary Rollins and this Administration's work to combat invasive species like the New World Screwworm to protect the health and well-being of our livestock. This announcement today emphasizes the commitment from USDA to prioritize animal health and biosecurity," said Pennsylvania Farm Bureau President Chris Hoffman.

"Screwworms pose a severe threat to livestock, particularly the sheep and goat industry, and the Texas Sheep and Goat Raisers Association appreciates the efforts of Secretary Rollins to help address this issue. TSGRA supports all efforts to provide surveillance for screwworm flies, offer technical assistance to producers as needed, and immediately expand sterile fly production and distribution centers in the U.S., Mexico, and Central America as necessary," said Texas Sheep & Goat Raisers Association President Sharon Pfluger Holman.

"The Texas Animal Health Commission commends Secretary Rollins and Governor Abbott's critical action in expanding New World screwworm eradication efforts. The sterile insect technique combined with animal health response plans, that include science based approaches and producer engagement, are key factors in ensuring continuity of Texas animal agriculture businesses and promoting overall animal health and productivity. Today's announcement bolsters the ongoing collaborative efforts between the USDA and Texas animal health officials to serve as the first line of defense in protecting U.S. animal agriculture," said Texas Animal Health Commission Executive Director and State Veterinarian Dr. Lewis R. "Bud" Dinges, DVM.

"The threat of screwworm infestation is a direct attack on Texas agriculture. Livestock consume well over 90% of Texas-grown corn, making cattle a staple market for corn farmers - many of whom include both corn and cattle in their operations. A screwworm outbreak would not only devastate the cattle industry but would also cripple the demand for Texas-grown corn. Texas Corn Producers Association appreciates USDA and Secretary Rollins' swift action against the screw worm, accelerating our ability to protect our animals and markets," said Texas Corn Producers Association Executive Vice President David Gibson.

"I commend President Trump and Secretary Rollins for their decisive action to protect Florida's cattle industry from the devastating threat of the New World Screwworm. By accelerating construction of a domestic sterile fly distribution facility, USDA is putting America's ranchers first, safeguarding our food supply, and defending the backbone of our agricultural communities. Their leadership ensures that America's cattle producers can continue to feed our nation and the world," said Representative Daniel Webster (FL-11).

"We applaud USDA Secretary Rollins for taking bold action to protect our food security from invasive pests like the New World Screwworm. This effort follows a letter we sent earlier this year encouraging the USDA to keep this parasite out of our country. The Trump Administration and congressional Republicans will always put American farmers and ranchers FIRST!" said Representative Mark Alford (MO-4).

"I am thankful to see Secretary Rollins take decisive action to combat the New World Screwworm. Building a sterile fly production facility in Edinburg, Texas, will put America first and end our reliance on other countries. Thank you, Secretary Rollins for your continued support for our farmers," said Representative Michael Guest (MS-03).

"The strong, decisive leadership of President Trump, Secretary Rollins, and USDA continues to put the farmers, ranchers, and ag producers who feed, fuel, and clothe the world first. Investing in a domestic sterile fly facility is a critical step to stop the spread of New World Screwworm. Thank you for standing with American ranchers and taking decisive action to protect American livestock. Promises made, promises kept," said Representative Tracy Mann (KS-1).

"Investing in a domestic fly facility is a necessary step to combat the spread of New World Screwworm. This decision will protect American agriculture, livestock, and our food supply. Thank you Secretary Rollins for your decisive leadership on this issue. Supporting American farmers and ranchers is another promise made, promise kept by this administration!" said Representative Mike Simpson (ID-2).

"New World Screwworm is not only a threat to livestock, but also the livelihoods of farmers and ranchers across the great state of Texas. Secretary Rollins' bold five-pronged strategy and the deployment of an $8.5 million sterile fly dispersal facility in South Texas demonstrates this administration's unwavering commitment to supporting America's agricultural producers. I look forward to continuing to work alongside the Trump administration to ensure this plan is fully implemented and our farmers and ranchers have the federal support necessary to protect their operations and America's food security," said Representative August Pfluger (TX-11).

"Texas has long led the nation's cattle industry, and it's imperative for state and federal leaders to use every tool at our disposal to protect our food supply from the destructive New World screwworm. Today's announcement of funding I supported for the USDA to combat this pest is a huge step forward, and I thank Secretary Rollins and Governor Abbott for their work and will continue to work alongside them to ensure Texas has the resources it needs to halt the spread," said Texas Senator John Cornyn.

"Agriculture and livestock are a core part of Texas economy and are how the Lone Star State feeds America and the world. I applaud Secretary Rollins for understanding the threat posed by the New World Screwworm and taking immediate action. I have been working with Secretary Rollins, Texas authorities, and my colleagues in Congress to safeguard America's livestock from this threat," said Texas Senator Ted Cruz.

"If we do not act now, the New World Screwworm could devastate Texas livestock and wildlife. Thank you, Secretary Rollins, for swiftly establishing the critical sterile fly distribution facility in Hidalgo County and delivering solutions to combat the threat posed by this parasite. I am committed to working alongside the Administration to put Texas farmers and ranchers first and safeguard our agriculture industry," said Representative Monica De La Cruz (TX-15).

"This Congress, one of my top priorities has been to strengthen our nation's preparedness against a potential screwworm outbreak. That includes the construction of a domestic fly production facility, which is a key pillar of my STOP Screwworms Act. Under Secretary Rollins' leadership of the USDA, we have made incredible strides to eliminate this dangerous parasite and protect our livestock industry. Today's historic announcement is just further proof that this administration is prioritizing our farmers and ranchers like never before. Thank you, Secretary Rollins and Governor Abbott, for always being a steadfast partner in the good fight to protect Texas' essential farmers and ranchers," said Representative Tony Gonzales (TX-23).
Background & Previous Action
Since announcing the plan in June, Secretary Rollins, USDA, and our federal and state partners have worked around the clock to keep NWS out of the United States and prepare for all contingencies in case NWS does enter the United States:

After a case of NWS was reported 370 miles south of the United States-Mexico border in July, Secretary Rollins closed southern ports of entry to livestock trade. This new northward detection came approximately two months after northern detections were reported in Oaxaca and Veracruz, less than 700 miles away from the United States border, which triggered the closure of our ports to Mexican cattle, bison, and horses on May 11, 2025.

USDA is investing $21 million to renovate an existing fruit fly production facility in Metapa, Mexico, which will provide an additional 60-100 million sterile flies. APHIS technical experts developed a comprehensive work plan and will continue to share their expertise to help Mexico bring this facility online as quickly as possible.

In June, APHIS began modifying an existing building at Moore Air Base in South Texas to establish a domestic sterile insect dispersal facility. Construction of the $8.5 million facility is on track for substantial completion at the end of 2025, with capacity to process up to 100 million flies a week, sourced from the existing production facility in Panama and, eventually, the facility USDA is helping renovate in Mexico. Importantly, this is part of our extensive contingency planning should NWS one day be detected in the United States. This facility does not produce sterile flies and will only be used if USDA deems it necessary to distribute flies in the Southern United States and northern Mexico.

USDA is rapidly exploring and seeking to validate a variety of technologies. APHIS held four public listening sessions to learn from companies, industry, academia, and the public about e-beam and x-ray technologies, potential sterile NWS strain improvements, genetically engineered flies, modular and other facilities for sterilization, and fast-tracking animal drug and treatment approvals, among other proposals. APHIS is further evaluating and validating the most promising options to help inform ongoing decision-making.

USDA leadership and technical staff at all levels continue daily collaboration with Mexico to contain NWS within its borders.

As part of a robust audit of Mexico's animal health controls, APHIS conducted site visits in June to evaluate Mexico's response and provide comprehensive feedback. As a result of inadequacies found in this audit, USDA is working diligently to help Mexico improve its surveillance, including development of a more robust trapping plan to conduct surveillance in areas of greatest priority, particularly in and around Veracruz and along the United States-Mexico border.

APHIS published an updated national disease response strategy for NWS, and is partnering with state animal and wildlife health officials to update and finalize emergency management plans. The agency is providing training and webinars for federal and state animal and wildlife officials, Tribal partners, and veterinarians.

APHIS made a number of technical and informational materials available to escalate communications and public outreach along the United States-Mexico border, particularly with veterinarians and animal owners. Materials such as pest ID cards and pest alerts raise awareness to be on the lookout for NWS. APHIS experts have held over 50 meetings with stakeholders to enlist their help and keep them informed about NWS developments, with several more upcoming webinars for members of the animal industry, vets, and state animal health officials.

USDA is leveraging Agricultural Research Service (ARS) experts to continue to develop novel treatments, preventatives, and response strategies. ARS scientists are located both in Texas at the Knipling-Bushland Livestock Insects Research Laboratory and at the Panama-United States Commission for the Eradication and Prevention of Screwworm (COPEG) facility in Panama. They are evaluating new attractants and potential trap and kill systems, improving the efficiency of sterile NWS production techniques, evaluating NWS strains, including genetically engineered strains, and developing models to predict NWS northward spread, among many other projects.

FDA has information available about current extra-label use of approved animal drugs and their role in treatment and prevention of NWS in animals.

Learn more about USDA's activities in response to New World Screwworm.

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USDA Announces Sweeping Plans to Protect the United States from New World Screwworm

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(Austin, TX, August 15, 2025) - U.S. Secretary of Agriculture Brooke L. Rollins today at the Texas State Capitol alongside Governor Greg Abbott and stakeholders from across the country announced the largest initiative yet in the U.S. Department of Agriculture's (USDA) plan to combat the New World Screwworm (NWS).

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1. Screwworms have been a problem since the 1900s and seem to be getting closer to approaching the U.S., although they have been eradicated.

2. Screwworms pose a danger to everyone in concern to their pets or livestock, and possibly themselves since they go after warm-blooded organisms.

3. There isn't an exact reason or explanation as to why Screwworms are coming up north, except for the idea that it may be because they prefer places with milder winters.

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"There’s a lot of conspiracy theories. And of course, it’s made up by the government. It’s another scare tactic. And again, it’s just lack of education."

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The new resurface of the screwworm is something scary and distributing to me. The USDA article said these pests can lay eggs in wounds of animals, and when the larvae hatch, they eat away at the flesh until the animal could even die. That honestly sounds terrifying, and it makes me wonder how something so small can cause so much damage. The USDA is trying to stop them by building a big sterile fly facility in Texas and they said “the construction of a domestic sterile fly production facility will ensure the United States continues to lead the way in combating this devastating pest.” Producing 300 million sterile flies a week sounds wild but it’s actually smart because it stops the screwworms from reproducing. Sage Lenier said in the Science Friday article that learning about problems “just left me feeling helpless… contending with the gloomy predictions for a doom-filled future.” That’s exactly how I’d feel if I only learned about how dangerous screwworms are without knowing there’s a plan to stop them. These pests could affect our farmers, livestock, health and much more. Both articles connect because one shows how we need hope when learning about problems and the other shows how science can actually give us solutions. To me it proves that we can’t just sit in fear but that we need action and knowledge.

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1. How did the Screwworm affect other countries, and what was their reaction to the pest?

2. Where did Screwworms first originate from?

3. If Screwworms were to enter the U.S., what would be the plan to eradicate them, and would it be different from their current plan with radiation?

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Screwworms are dangerous flies that threaten livestock and even humans. The Science Friday interview explained that the insect is "definitely a very bad insect to have around," since it lays eggs in the open wounds of living animals. The CNN article also showed how dangerous they are, “the female fly… will lay up to 200 to 300 eggs… they immediately start burrowing and feeding on the tissue of that animal.” My viewpoint is that fighting screwworms is necessary. If we don't solve the screwworm problem, it could undo years of progress spent protecting U.S agriculture. That is why I believe a solution is necessary. Even if it costs millions of dollars it would be worth it because it would remove any danger to animals, ranchers, and food supply chains. Without a solution food supply chains would be decimated, meat and dairy prices would skyrocket. This is also why education is very important, to support a solution people need to understand the problem.

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1. I noticed that although there are many other pests in our ecosystem, screwworms are a more dire problem due to their effect on livestock, which plays a large role in the US.

2. I noticed the deep research that went into the solution for screwworms, first it was acknowledging their role in food chains to not heavily disrupt ecosystems but as well as understanding their behavior to better eradicate them.

3. I noticed how these insects are not a new problem and have been around for years, but in a more controllable form, although as the population increased more there was a motivation for more serious action.

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"And this is both movement of people, and people and animals, and probably lack of knowledge, in addition to probably some lack of surveillance. But as you bring people through an area that may not be aware of an impact of a pest, and they’re not teaching them about that pest, obviously you have a lack of education. And then things get moved around that we may not wanted to have move around."

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The resurfacing pest of the screwworm is one that shouldn't be messed with, as it is affecting the lives and animals, and maybe even one day us. The New World screwworm was at one point successfully eradicated from the United States many decades ago, but has moved around recently into South America, Central America, and even Mexico. These insects are quite deadly, stating, "this fly is notorious for laying eggs in the wounds of animals and slowly eating its victims from the inside out. But though these flies are causing great terror to animals, scientists have developed a strategy to stop these pests. The tactic is done of growing these flies in a laboratory to understand the insects, and eventually kill them. It is important for managing them, because since scientists find out how to grow and manage them they will, "destroy them in a genetic fashion that prevents them from producing future offspring." It is important for the screwworm to be eradicated again as they are affecting animals and their industries. These animals, such as cattle, is important for industries in the United States, and overall the screwworms will cause a major impact in these businesses if they continue to harm cattle and other livestock. Not only is it important to get rid of these flies, but it's also important for all people to have knowledge in these dangerous pests, as they could not only come after their own pets, but possible even themselves. When we learn about the screwworms, we can learn how to take care of them in the future.

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1. I wonder if other insects have yet to be recognized in the same light as screwworm flies.

2. I wonder what could occur to other areas if screwworm flies were to be introduced to an area with no livestock, would they be more likely to attack humans?

3. I wonder about the conspiracy theories that have been spread.

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The US has a plan to breed millions of flies and drop them from planes. Here’s why | CNN

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Flesh-eating maggots are inching toward the southwestern border of the US. The defense plan? Breed millions of sterilized flies and drop them from the sky.

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New World screwworm (NWS) is a species of parasitic flies that feed on live tissue.

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The new world Screwworm is a fly that is heading up north is a huge threat to livestock like cattle. This is because they attack any warm blooded animals and will even attack humans. This is dangerous because science Friday said "This fly is notorious for laying eggs in the wounds of animals and slowly eating its victims from the inside out." which would largely affect livestock. Cdc.gov also said "They could also be in your nose, eyes, or mouth.". These flies typically lay 200-300 eggs at once in open wounds and then start to eat the animal form inside. This is an important issue to solve because it can save animal and human lives. When attacked by these flies you can experience bleeding from open sores and have painful skin wounds. However scientists have delovopled a stragity to stop this fly by dropping millions of bugs out of an airplane to get rid of these fly. Most people knew nothing about this because of the lack of education and is a reason why it is taking a long for a solution to be created.

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a species of flies may cross the border and go into texas this is causing people to worry

screwworms lay eggs in open wounds of animals which then cause the animals to be eaten inside out by the larvae

screwworms don’t just target animals they target people

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“These insects, particularly, are not playing a viable role in any ecosystems, so taking them out doesn’t impact anything else. And it actually saves the lives of animals and saves the lives of humans.”

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I wonder what will happen if there was a big outbreak of these pests in the US

I wonder what would happen to food industries if these pests wipe out large groups of cows

I wonder if this group of pests will ever go extinct

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https://www.texastribune.org/2025/05/21/texas-screwworm-cattle-industry-border/

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Screwworms are not only a threat to animals but they are a threat to people. They lay eggs into the open wounds of not just animals, but people too. Once that is done, these animals are eaten from the inside out leading to nothing but pain.  "We do target talking to livestock folks, because we know people who own cattle and other livestock are going to be impacted. So we just want people to be aware, to understand its importance and the significance and the reason why we need to keep it out of the United States.” This quote just shows that experts see that screwworms only provide negative impacts to animals and farmers. Getting rid of screwworms would benefit everyone. If they were to go extinct, then potential threats to animals would be no more. "These insects, particularly, are not playing a viable role in any ecosystems, so taking them out doesn't impact anything else. And it actually saves the lives of animals and saves the lives of humans.".  Screwworms are destructive and do no good for animals or people. Scientists are trying to come up with a solution to this threat because they recognize also that these are nothing but destructive pests. No warm blooded species is safe from this threat and that is why people need a solution.

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1. Screwworms greatly impact the livestock industry and other warm-blooded animals as well.

2. Screwworms have been kept in an area in Panama for over 30 years, but they are now moving north.

3. The lack of education on this makes people scared, which also makes them create theories surrounding this situation.

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"There is. There’s a lot of conspiracy theories. And of course, it’s made up by the government. It’s another scare tactic. And again, it’s just lack of education. And most folks don’t anything about it. I mean, I didn’t learn about it until I was in grad school to be an entomologist. So it is kind of like out of a sci-fi movie because it’s such a freaky insect that you think, this can’t be real. But it is real."

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1. I wonder what would happen if the screwworms evolved enough to not be affected by the radiation anymore.

2. I wonder what will happen if the screwworms end up growing hugely in population and how it would impact the livestock industry.

3. I wonder if the screwworms will be able to be kept again in the spot in Panama like before.