Infectious hepatitis epidemic spread by water.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003604:Czechoslovakia; D004196:Disease Outbreaks; D004812:Epidemiologic Methods; D005260:Female; D006506:Hepatitis A / Q000453:epidemiology*; D006801:Humans; D066298:In Vitro Techniques; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D014871:Water Microbiology; D014881:Water Supply