Schistosome infected people or other mammals from the discharge of faecal egg, if manure contaminated the water, eggs were brought into the water, hatched miracidium in the water. 感染血吸蟲(chóng)的人或其它哺乳動(dòng)物從糞便中排出蟲(chóng)卵,若糞便污染了水,蟲(chóng)卵被帶進(jìn)水中,在水里孵出毛蚴。