Long-term immunogenicity of hepatitis A virus vaccine in Alaska 17 years after initial childhood series.

Raczniak, Gregory A; Bulkow, Lisa R; Bruce, Michael G; Zanis, Carolyn L; Baum, Richard L; Snowball, Mary M; Byrd, Kathy K; Sharapov, Umid M et al. · J Infect Dis · 2013

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Abstract

The Centers for Disease Control and Prevention recommends hepatitis A virus (HAV) vaccination for all children at age 1 year and for high-risk adults. The vaccine is highly effective; however, protection duration is unknown. We report HAV antibody concentrations 17 years after childhood immunization, demonstrating that protective antibody levels remain and have stabilized over the past 7 years.

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