Hepatitis as a world problem.
D000293:Adolescent; D000328:Adult; D001083:Arabia; D001315:Australia; D002170:Canada; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005260:Female; D006506:Hepatitis A / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007557:Israel; D007558:Italy; D008297:Male; D009520:New Zealand; D011647:Puerto Rico; D013548:Sweden; D013557:Switzerland; D014481:United States; D014944:World Health Organization