S . Manisoni

S . Manisoni infects about 83. 31 million people worldwide. S. mansoni is the most widespread of the human-infecting schistosomes, and is present in 54 countries.These countries are predominantly in South America and the Caribbean, Africa including Madagascar, and the Middle East. S. mansoni is commonly found in places with poor sanitation. Because of the parasite's fecal-oral transmission, bodies of water that contain human waste can be infectious. Water that contains large populations of the intermediate host snail species is more likely to cause infection. Young children living in these areas are at greatest risk because of their tendency to swim and bathe in cercaria-infected waters longer than adults .Any one travelling to the areas described above, and who is exposed to contaminated water, is at risk of schistoso

miasis.

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