ABSTRACT
We investigated etiology of acute sporadic viral hepatitis in southern in Saudi Arabia in a series of 132 patients admitted with acute viral hepatitis. Of these cases, 108 [51.8%] were due to acute hepatitis A virus infection, of which 11 [8.3%] patients had been previously exposed to hepatitis E virus, and another 10 [7.6%] were chronic carriers of hepatitis B virus. These cases [2.3%] were acute hepatitis B virus infection. The overall prevalence of hepatitis E I[g]G antibodies was found to be 9.1%. The remaining 21 [15.9%] patients were tested for hepatitis E I[g]M, EBV-VCA I[g]G antibodies by sensitive enzyme immunoassays. In none of them could hepatitis E I[g]M, EBV-VCA I[g]M or hepatitis C I[g]G antibodies be demonstrated, and these patients were thus considered as acute non-A, non-B hepatitis. Acute hepatitis C virus infection, however, could not be ruled out from this group. We therefore concluded that the majority of clinically apparent viral hepatitis cases were due to HAV, while HBV accounted for a small proportion of the cases. Clinically apparent HEV infection dose not appear to be common in the population studied, since even those with serologic evidence of previous exposure to HEV did no recall a history suggestive of acute viral hepatitis