[A 3-year surveillance on schistosomiasis japonica in marshland and lake regions].
D000818:Animals; D002681:China; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D051379:Mice; D012554:Schistosomiasis japonica / Q000453:epidemiology*; D012908:Snails / Q000469:parasitology