一血吸虫病在我國流行已久,对于人民的危害是極其嚴重的。病害流行地区遍及江苏、浙江、湖南、湖北、安徽、江西、四川、云南、广东、廣西、福建和上海等12个省(市)的350个縣(市),患病人数約有一千多万,受到感染威脅的人口則在一億以上。据典型調查,在病人中約有40%左右已經有了症狀,他們的劳动力受到了不同程度的損害;約有5—10%是晚期病人,他們大部分丧失了劳动力,并且已經受到死亡的 A schistosomiasis has long been prevalent in our country and the harm done to the people is extremely serious. The epidemic areas covered 350 counties (cities) in 12 provinces (cities) including Jiangsu, Zhejiang, Hunan, Hubei, Anhui, Jiangxi, Sichuan, Yunnan, Guangdong, Guangxi, Fujian and Shanghai with about one thousand The population threatened by infection is over 100 million. According to a typical survey, about 40% of the patients already have symptoms and their labor force has been damaged to varying degrees. About 5-10% are advanced patients, most of whom have lost their workforce and have died