Nosocomial hepatitis A.
D000328:Adult; D002648:Child; D003428:Cross Infection / Q000453:epidemiology* / Q000635:transmission; D006506:Hepatitis A / Q000453:epidemiology* / Q000635:transmission; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009784:Occupational Diseases / Q000453:epidemiology; D010564:Personnel, Hospital