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A group of 295 adult male patients from Cairo, Egypt, with acute hepatitis were studied. Acute hepatitis A was diagnosed in 8 patients (2.7%), hepatitis B in 115 (38.9%), delta infection in 19 (6.4%) and possible Epstein-Barr virus or cytomegalovirus-mediated hepatitis in 7 patients (2.4%). The remaining 146 patients (49.5%) were considered to have hepatitis non-A non-B. The clinical presentation of the various causes of hepatitis was similar, although patients with hepatitis B and delta infection had significantly higher mean alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels than patients diagnosed as having hepatitis non-A non-B. Various risk factors for the acquisition of hepatitis were evaluated. A history of an injection for medical treatment and a history of anti-schistosomal therapy were significantly associated with delta infection when compared to patients with either hepatitis B or non-A non-B (P < 0.05). Hepatitis non-A non-B is a major cause of acute hepatitis in adults living in Cairo, and an iatrogenic source of infection may be important in the epidemiology of delta infection.
Accepted for publication April 4, 1986.
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