[Investigation on acute schistosomiasis in Tongling County in 1990-1999].
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D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000818:Animals; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012552:Schistosomiasis / Q000453:epidemiology*; D012908:Snails