Acute sporadic hepatitis E in children living in Cairo, Egypt

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Abstract
Seventy-three pediatric patients with acute hepatitis and 19 control patients without liver disease living in Cairo, Egypt, were evaluated with a newly developed Western blot assay for IgM antibody to hepatitis E virus (IgM anti-HEV). The mean age of acute hepatitis patients was 6.4 years (range, 1-13 years); 56% were male. Among the 73 acute cases, hepatitis A was diagnosed in 30 (41%), possible acute hepatitis B in three (4%), hepatitis E in nine (12%), and by exclusion, non-A, non-B hepatitis in 29 (40%). Two additional acute cases were positive for both IgM anti-HAV and IgM anti-HEV. None of the 19 control subjects had IgM anti-HEV. Parenteral risk factors were associated with cases of non-A, non-B hepatitis but were not associated with acute hepatitis E. Contact with a family member with jaundice was associated with acute hepatitis A. In contrast to prior epidemics of enterically-transmitted non-A, non-B hepatitis, HEV was found to be a common cause of acute hepatitis in a pediatric population. This study provides additional evidence that HEV may be a frequent cause of acute sporadic hepatitis among children living in some developing countries.