BILHARZIASIS.
D000818:Animals; D003140:Communicable Disease Control; D004813:Epidemiology; D006801:Humans; D012552:Schistosomiasis; D012908:Snails; D013019:South Africa; D014876:Water Pollution
COMMUNICABLE DISEASE CONTROL; EPIDEMIOLOGY; SCHISTOSOMIASIS; SNAILS; SOUTH AFRICA; WATER POLLUTION