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Hepatitis B Pediatric Vaccine (Engerix-B Pediatric) Side Effects Hepatitis b vaccine how long does it last

Posted at February 13th, 2023 | Categorised in Medicine

A study has found that immunity to hepatitis B can continue in adolescents for up to 15-16 years after they were vaccinated in infancy with three doses of the hepatitis B vaccine.

What is Hepatitis B?

Hepatitis B is a viral infection that affects the liver. It can be transmitted through contact with an infected person’s bodily fluids, such as blood or semen. Hepatitis B can cause acute and chronic liver disease and increase the risk of liver cancer.

Importance of Vaccination

Vaccination plays a critical role in preventing the spread of hepatitis B. The hepatitis B vaccine offers long-lasting immunity against the virus, making it an essential component of routine childhood vaccinations. Vaccination is also recommended for adults at risk of exposure to the virus, such as healthcare workers or people living in areas with high infection rates.

Immunity to Hepatitis B Persists in Adolescents 15-16 Years of Age Vaccinated in Infancy with Three Doses of Hepatitis B Vaccine

Research Findings

The study mentioned earlier found that 15-16 years after infants had been vaccinated with three doses of the hepatitis B vaccine, they still had a high level of immunity against the virus. The research involved 415 adolescents in Thailand who had received the vaccine as infants.

The study also found that although the vaccine’s effectiveness decreased over time, it remained at a level that would provide protection against the virus for many years. The research team recommended that booster doses of the vaccine may not be necessary for adolescents who were vaccinated in infancy.

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The Hepatitis B Vaccine

The hepatitis B vaccine is usually given in three doses, with the first being given at birth. The second and third doses are typically given by four and six months of age.

The vaccine is safe and effective, with most people not experiencing any side effects. However, the most common side effect is mild discomfort or soreness at the injection site. It is important to note that the vaccine is not a treatment for hepatitis B, and anyone who has already contracted the virus may need medical treatment.

Conclusion

The study’s findings suggest that the hepatitis B vaccine provides long-lasting immunity against the virus and may not require booster doses in some cases. Vaccination remains a critical tool in the fight against hepatitis B and can help prevent the spread of the virus and its associated health risks.

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