The influence of acquired resistance in the epidemiology of bilharziasis.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007109:Immunity; D012552:Schistosomiasis / Q000453:epidemiology* / Q000517:prevention & control*; D013223:Statistics as Topic; D015030:Zimbabwe