title: Influence of delta infection on severity of hepatitis B.
abstract: The prevalence of serum markers of primary delta infection was determined in 532 patients with acute benign hepatitis B seen in Italy, and in 111 patients with fulminant hepatitis B seen in Italy, France and England. Patients with fulminant hepatitis had significantly higher prevalence of delta markers (43/111, 39%) than did those with benign hepatitis (101/532, 19%). In 25 of the 43 patients with delta-positive fulminant hepatitis, serum markers indicated a primary hepatitis B infection while in the remaining 18, IgM antibody to hepatitis B core antigen was absent, indicating that hepatitis B preceded superinfection with the delta agent. The increased morbidity of HBsAg hepatitis with delta infection may result from the cumulative simultaneous exposure to hepatitis B virus and delta, or from superinfection of HBsAg carriers with delta.
mesh_terms: D000208:Acute Disease; D002353:Carrier State / Q000276:immunology; D003588:Cytopathogenic Effect, Viral; D004739:England; D005602:France; D006509:Hepatitis B / Q000150:complications* / Q000453:epidemiology / Q000276:immunology; D006510:Hepatitis B Antibodies / Q000032:analysis; D006511:Hepatitis B Antigens / Q000032:analysis* / Q000276:immunology; D035923:Hepatitis delta Antigens; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis; D007558:Italy; D012306:Risk
chemical_list: D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens; D035923:Hepatitis delta Antigens; D007075:Immunoglobulin M