The Hepatitis B vaccine is for preventing hepatitis B virus (HBV) infection, a serious liver disease spread through infected blood or bodily fluids. The vaccine triggers immunity by mimicking the virus without causing illness.
The vaccine contains a part of the HBV surface antigen, which prompts the immune system to produce antibodies. These antibodies protect against future HBV infections. The Centers for Disease Control and Prevention (CDC) notes that the vaccine provides long-lasting protection.
There are several types of Hepatitis B vaccines, including:
Some vaccines combine Hepatitis B with others, like Hepatitis A or routine childhood vaccines.
The CDC recommends the Hepatitis B vaccine for:
Adults not previously vaccinated should also consider getting the vaccine, especially if they travel to areas with high rates of HBV.
Some people believe the Hepatitis B vaccine is only for certain groups, like healthcare workers or travelers. However, the CDC recommends universal vaccination for infants and children to ensure broad protection. Others think the vaccine causes autism, but extensive research has debunked this myth.
The vaccine is typically given in a series of shots. For infants, the schedule is usually at birth, followed by doses at 1-2 months and 6 months. Adults receive the vaccine in three doses over six months, or in some cases, two doses over one month with a different formulation.