title: Hepatitis vaccines.
abstract: The development of highly effective and safe inactivated HAV vaccines and highly effective and safe recombinant HBsAg subunit HBV vaccines represents major advances in the control of viral hepatitis, but many challenges remain. Because current HAV immunization recommendations target high-risk groups only, infection rates are unlikely to fall dramatically until universal childhood immunization programs are implemented. Routine HBV vaccination of infants, children, adolescents, and individuals at high risk will reduce the incidence of infection, but vaccine nonresponsiveness and escape mutants are important potential challenges. Whether either HAV or HBV vaccine provide lifelong protection remains to be determined. Vaccines for HDV, HEV, and HCV are not yet available.
authors: Department of Medicine, Division of Digestive Disease and Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA.
authors: R S
authors: RS
authors: Koff
mesh_terms: D000328:Adult; D002648:Child; D022362:Hepatitis A Vaccines / Q000008:administration & dosage; D017325:Hepatitis B Vaccines / Q000008:administration & dosage; D006525:Hepatitis, Viral, Human / Q000517:prevention & control*; D006801:Humans; D014611:Vaccination; D014761:Viral Hepatitis Vaccines / Q000008:administration & dosage
chemical_list: D022362:Hepatitis A Vaccines; D017325:Hepatitis B Vaccines; D014761:Viral Hepatitis Vaccines