Vaccines (HAV)

Long-Term Follow-Up of HAV Immunizations Reported

Published in Hepatitis Weekly, March 1st, 1999

Inactivated hepatitis A vaccine is safe and immunogenic in children, and the duration of protection against HAV infection is longer than five years.

Researcher C.Y. Chan and colleagues conducted a long-term follow-up of hepatitis A vaccination in children to evaluate the immunogenicity of an inactivated hepatitis A vaccine.

Ninety-six children who had seroconversion of antibody to HAV (anti-HAV) after receiving a three-dose schedule of inactivated hepatitis A vaccine were enrolled into this study.

Sixty months after the initial vaccination, all vaccinees who received annual follow-up still had protective levels of anti-HAV.

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Source: Hepatitis Weekly (1999-03-01)

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