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Hepatitis B vaccine is given as 3-shot series dose.
-The first shot is given at birth in the delivery room.
-The second shot is given 1 month or 28 days after the first shot.
-The third and last shot is given at least 4 months (16 weeks) after the 1st shot (or at least 2 months after the 2nd shot).Infants should be a minimum of 24 weeks old at the time of the 3rd shot.

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In 1981 the FDA approved a Hepatitis B vaccine for human use that became commercially available in 1982. In 1986, a hepatitis B vaccine produced by recombinant DNA technology was licensed and a second recombinant-type hepatitis B vaccine was licensed in 1989.

INCIDENCE RATE CHANGE:
Before 1982, an estimated 200,000--300,000 persons were infected annually with HBV, including approximately 20,000 children. After the vaccine was introduced, the number of persons infected in the United States declined to an estimated 79,000 in 2001. The incidence rate declined by more than 80%.

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The Hepatitis B virus is spread when blood, 🤬, or other body fluid infected with the Hepatitis B virus enters the body of a person who is not infected. It can also be  spread from an infected mother to her baby during birth.

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Symptoms include pain in abdominal area, fatigue, loss of appetite, malaise, fluid in the abdomen, nausea, yellow skin(jaundice), dark urine and itching.

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After the  Hepatitis B virus enters the body their is an incubation period that lasts from 1.5 to 6 months (average of 4 months) until illness begins to show.

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Hepatitis B is caused by the Hepatitis B virus which comes from the virus family Hepadnaviridae.

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Hepatitis B can lead to severe complications like...
-Chronic hepatitis.
-Cirrhosis.(degeneration of cells, inflammation, and fibrous thickening of tissue of the liver.)
-Liver failure.
-Liver cancer.
-DEATH!!!!!!!
Study showed that the total number of yearly deaths attributable to the complications of Hepatitis B was estimated at 686,000 and the number of lives lost was higher than HIV.

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In the year of 2017 Africa had the highest number of cases reported of Hepatitis B.

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Hepatitis B is a viral infection caused by the Hepatitis B virus that affects the liver and causes acute or chronic disease, infection of the liver, liver failure, and/or cancer. It can be fatal if it isn't treated. Hepatitis B is spread through direct contact with body fluids of someone that is infected.