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chapter 3
Schistosomiasis (Snail Fever)
Welcome the sunrise, come under the stars, work from dusk to daybreak
Our strength is boundless, our enthusiasm is redder than fire . . .
Be the river like a sea, drained clean it shall be . . .
Empty the rivers to wipe out the snails, resolutely to fight the big-belly disease.
WEI WEN-PO,1958
Schistosomiasis is a waterborne parasitic worm infection affecting up to 400 to 600 million people in developing countries.1 More than 90% of the cases occur in Africa, and today schistosomiasis is one of the most common parasitic infections in Africa. An additional 1 to 2 million cases each also occur in the Americas (primarily in Brazil) as well as in the Middle East
