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Influenza virus has a rounded shape, but it can be elongated or irregularly shaped too. It also has a layer of spikes on the outside. The spikes are made of two different proteins- one is the hemagglutinin (HA) and the other is the neuraminidase (NA). The HA protein allows the virus to stick to a cell, so that it can enter a host cell and start the infection process. Viruses always need to enter the cell so that they can make copies of themselves. The virus needs the NA protein so it can exit the host cell, so that the new viruses that was made on the inside of the host cell can go on to infect more cell. Since the proteins are present on the surface of the virus, they are visible to the human immune system. The Influenza A virus is from the Orthomyxovirida and causes the flu.

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There are 4 types of Influenzas viruses: A, B, C, and D. Type A viruses infect humans and several types of animals, like birds, pigs, and horses. Type B is usually only found in humans. Type C influenza is usually only found in humans, but has also been found in pigs and dogs and Type D is mostly found in cattle. Below you can see the different proteins and how they make up the virus's.

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The Influenza virus is an acute viral infection of the upper or lower respiratory tract. The virus is passed through the air and enters our bodies through our nose and mouth. We can also catch the virus by contaminated surfaces. Therefore, it is always best to practice good hygiene.

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People who have the virus often has fever, chills, cough, congestion, headaches, runny nose, fatigue, muscle/body aches, sore throats, and sometimes they may have vomiting and diarrhea, though this is more common in children than adults. You should watch them for dehydration too.

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Who is at High Risk of catching Influenza Virus?

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Who is at High Risk of catching Influenza Virus?

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We start vaccinating children at the age of 6 months. Children 6 months of age to the age of 2 years old have a higher chance of catching the virus. Adults over the age of 65 years old are at a higher risk and if you have chronic health issues - heart disease, asthma, lung conditions, and diabetes you are at a higher risk for catching Influenza virus.

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The main way to treat the Influenza Viruses is to get plenty of rest, fluids, and let the virus run it course. Sometimes over the counter anti-inflammatory pain relievers help with the symptoms. Occasionally the health care provides will prescribe an antiviral drug, these drugs treat viral infections unlike antibiotics.

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People who have the virus often has fever, chills, cough, congestion, headaches, runny nose, fatigue, muscle/body aches, sore throats, and sometimes they may have vomiting and diarrhea, though this is more common in children than adults. You should watch them for dehydration too.

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The Influenza virus A and B has been circulating through humans since the 1990's. Below is a brief history of the virus.

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Who is at risk of catching Influenza viruses?

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Who is at risk of catching Influenza viruses?

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Humans and animals both a risk of catching the Influenza Virus. Type A and B are our most common types in humans. Type A can also be found in animals. Type C causes mild illness and is not thought to cause human flu epidemic and Type D is usually found in cattle.