世界上有76个国家和地区有血吸虫病,感染人体的血吸虫有19种。血吸虫在中国主要分布在长江中下游一带及长江流域以南地区。近年来,由于洪水不断,残存的钉螺迅速繁殖,给人们的健康带来了很大的危害,中国的血吸虫病人约有8.4万。湖北省洪湖市地处长江中下游平原,是一个湖区,水面 Schistosomiasis occurs in 76 countries and regions in the world, and 19 species of human schistosomes. Schistosoma japonicum is mainly distributed in the middle and lower reaches of the Yangtze River and south of the Yangtze River in China. In recent years, due to the continuous flood and the rapid propagation of the remaining snail, which has brought great harm to people’s health. There are about 84,000 schistosomiasis patients in China. Honghu City, Hubei Province is located in the middle and lower reaches of the Yangtze River plain, is a lake area, the water surface