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• n  an infestation with or a resulting infection caused by a parasite of the genus Schistosoma; common in the tropics and Far East; symptoms depend on the part of the body infected

• The chlorine, which seemed useless, can go into making sodium pentachlorophenatea chemical that kills the river-borne parasites causing bilharziasis, a disease chronic in .
• Schistosomiasis, bilharziasis, snail feverby whatever name, the debilitating and often fatal illness afflicts more than 150 million people in Africa, Latin America and Asia.
• The squishy little parasites are less than an inch long, but they cause a globe-girdling disease variously known as schistosomiasis, bilharziasis, or simply snail fever.

• schistosomiasis
• bilharzia