Epidemiological particularities of viral hepatitis at child age.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002673:Child, Hospitalized; D002674:Child, Institutionalized; D002675:Child, Preschool; D006506:Hepatitis A / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D008875:Middle Aged; D012383:Romania; D012621:Seasons; D014505:Urban Population