[Epidemiologic investigation of an outbreak of hepatitis A due to contaminated blood clams (author's transl)].
D000293:Adolescent; D000328:Adult; D000368:Aged; D049872:Bivalvia / Q000382:microbiology*; D002648:Child; D002675:Child, Preschool; D002681:China; D004196:Disease Outbreaks; D005260:Female; D005516:Food Microbiology; D006506:Hepatitis A / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged