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Hepatitis A booster vaccination: is there a need?
P Van Damme1, J Banatvala, O Fay
1Centre for the Evaluation of Vaccination, WHO Collaborating Centre for Control and Prevention of Viral Hepatitis, Unit of Epidemiology and Social Medicine, University of Antwerp, 2610 , Antwerp, Belgium. pierre.vandamme@ua.ac.be
Lancet (London, England)
|October 3, 2003
Summary
Hepatitis A vaccination provides long-term protection, persisting beyond ten years in healthy individuals. Current evidence suggests booster shots are unnecessary after a full primary vaccination course for this population.
Area of Science:
- Immunology
- Infectious Diseases
- Vaccinology
Background:
- Hepatitis A is a prevalent vaccine-preventable infectious disease globally.
- Hepatitis A vaccines, available since 1992, offer long-term immunity, but consensus on duration and booster needs is lacking.
- Booster vaccination policies vary, often relying on manufacturer or national authority guidelines.
Purpose of the Study:
- To review long-term immunogenicity and protection conferred by Hepatitis A virus (HAV) vaccines.
- To assess the necessity of future HAV booster vaccinations in different populations.
Main Methods:
- A panel of international experts convened in June 2002.
- Reviewed existing data on long-term immunogenicity and protection from HAV vaccines.
Main Results:
- Protective antibody levels persist for over 10 years in healthy individuals post-primary vaccination.
- Immune memory provides protection extending beyond detectable antibody duration.
- No evidence supports the need for HAV booster vaccination in healthy individuals after completing the primary course.
Conclusions:
- Hepatitis A booster vaccinations are not indicated for healthy individuals who have completed their primary vaccination course.
- Further research is required to determine if booster doses can be omitted in specific patient groups.
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