A disease in which humans are parasitized by any of three species of blood flukes: Schistosoma mansoni, S.
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Some 280,000 people die from snail fever in Africa alone each year.
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El-Sayed led the team that sequenced the Schistosoma mansoni, one of the two major parasites that cause snail fever.
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Schistosomiasis or snail fever, which can cause deadly blood loss, affects hundreds of thousands of people in Yemen, for example.
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They included " snail fever", or schistosomiasis, which is caused by a parasite and leaves people so weak they can't work.