Current update of pediatric hepatitis vaccine use.

Vaccines are now available for the prevention of hepatitis A and hepatitis B. In this article, biologics are reviewed with special attention to their use in the pediatric patient. Special attention is paid to issues that developed in 1999. For hepatitis A vaccine, it is the change in US recommendations regarding increased use in higher-risk US locations. For hepatitis B vaccine, it is the concern about toxicity, real or imagined.