Schistosomiasis in a mining area: intersectoral implications.

The high prevalence (greater than 90%) and intensity of infection (50% of those infected excreted greater than 600 eggs per gram of faeces) of schistosomiasis in a tin mining area in eastern Zaire is related to extensive man-made ecological changes and intensive man/water contact. Construction of latrines, water supply and availability of diagnosis and treatment through occupational health services have been used in control efforts. The integration of environmental measures is limited by their high costs. The control of schistosomiasis in this area of intense transmission would require repetitive chemotherapy and other measures which are beyond available resources.