A disease in which humans are parasitized by any of three species of blood flukes: Schistosoma mansoni, S.
1Some 280,000 people die from snail fever in Africa alone each year.
2El-Sayed led the team that sequenced the Schistosoma mansoni, one of the two major parasites that cause snail fever.
3Schistosomiasis or snail fever, which can cause deadly blood loss, affects hundreds of thousands of people in Yemen, for example.
4They included " snail fever", or schistosomiasis, which is caused by a parasite and leaves people so weak they can't work.