http://www.cdc.gov/ncidod/diseases/hepatitis/a/index.htm
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Division of Viral Hepatitis, National Center for Infectious Diseases
This web site provides access to information about Hepatitis A for both health professionals and the lay public. Clinical features, transmission, prevention (Hepatitis A vaccine), and risk groups are among the topics addressed. CDC's Morbidity and Mortality Weekly Reports (MMWR) recommendations are available for downloading in PDF format.