title: Aspects of the ecology of viral hepatitis.
abstract: Human viral hepatitis, a major public health problem throughout the world, is caused by several different viruses. Hepatitis A virus is a member of the enterovirus genus. Hepatitis B is as yet an unclassified DNA virus. A number of unidentified viruses cause at least two different types of non-A, non-B hepatitis. The delta agent, which has been described more recently, is a transmissible agent which is dependent for its replication on a helper function provided by hepatitis B virus. Aspects of the ecology of viral hepatitis are described.
mesh_terms: D000818:Animals; D002353:Carrier State; D003430:Cross-Sectional Studies; D004463:Ecology; D006506:Hepatitis A / Q000635:transmission; D006509:Hepatitis B / Q000635:transmission; D006511:Hepatitis B Antigens / Q000032:analysis; D006526:Hepatitis C / Q000635:transmission; D035923:Hepatitis delta Antigens; D006524:Hepatitis, Viral, Animal / Q000635:transmission; D006525:Hepatitis, Viral, Human / Q000276:immunology / Q000635:transmission*; D006801:Humans; D012621:Seasons
chemical_list: D006511:Hepatitis B Antigens; D035923:Hepatitis delta Antigens