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Students from a Rural Boarding house of UFMG School of Medicine performed a survey of prevalence of schistosomiasis mansoni and other intestinal parasites in 20 rural schools in Jaboticatubas, MG. An evaluation of house and sanitation conditions was made and stool parasitological examinations were realised in all school children. It was noticed that 15.43% of the children presented S. mansoni's ova in stool--that was the most prevalent parasite. From the examinations we verify 13.76% positive cases for G. lamblia; 12.89% for S. stercoralis; 11.13% for A. lumbricoides; 9.96% for hookworms; 9.57% for E. histolytica. The other parasites appeared with lower prevalence. All the children that presented parasite's ova in stool received treatment. The result that was found shows that schistosomiasis mansoni is a very serious problem of public health and basic sanitation actions are necessary to the endemic control.