EPIDEMIOLOGY Schistosomiasis occurs mainly in rural agricultural and periurban areas. Infection with S. mansoni is found in parts of South America Africa and the middle east Infection with S japonicum is found in the Far east mostly China and the philippines In China, 0.67%of the population may be infected, according to cdc statistical report at 20089 EPIDEMIOLOGY  Schistosomiasis occurs mainly in rural agricultural and periurban areas.  Infection with S. mansoni is found in parts of South America, Africa, and the Middle East.  Infection with S. japonicum is found in the Far East, mostly China and the Philippines.  In China, 0.67% of the population may be infected, according to CDC statistical report at 2008. 