Hepatitis A Vaccine
(Hep A Vaccine)
What Is Hepatitis A?Hepatitis A is a viral infection that affects the liver. The virus causes the liver damage. Liver function is reduced. Waste that is normally eliminated by the liver builds up in the blood. Jaundice, a yellowing of the skin and eyes, usually results. Hepatitis A is passed from person to person through contact with infected stool. You can get the virus from an infected child by changing a diaper or by having sexual contact with an infected person. Contaminated food and water can also spread the virus.The virus is very common in developing countries. It also occurs in the United States.Symptoms include:
- Yellowing of the eyes and skin—jaundice
- Abdominal pain or soreness
- Lack of appetite
- Nausea and vomiting
What Is the Hepatitis A Vaccine?The vaccine contains an inactivated form of the hepatitis A virus. It is given as an injection in the arm. A combined vaccine that protects against both hepatitis A and hepatitis B is also available.
Who Should Get Vaccinated and When?The vaccine is recommended for all children aged 12-23 months. The 2 doses of the series are given 6-18 months apart. Children who have not been vaccinated can receive the shot at their next doctor's visit.The following people should also get vaccinated:
- Children aged 24 months or older who are at high risk and have not been previously vaccinated.
- People traveling to areas where hepatitis A is prevalent. The CDC's Traveler's Health website shows which areas have high rates hepatitis A.
- Men who have sex with men.
- Injection drug users.
- People who are at risk because of their job.
- People with chronic liver disease.
- People treated with clotting factor concentrates.
- People who will have close contact with an adopted child from a medium- or high-risk area.
- People who want immunity to hepatitis A.