血吸虫病在发展中国家一直是个非常棘手的问题,传统上控制血吸虫病主要依靠药物化疗和杀螺剂,但仍存在不能防止再感染和环境污染等问题。以往的研究发现,有一种蝲蛄Procambarus clarkii能通过捕食和食物竞争而使有肺螺种群数量下降甚至灭绝。本研究通过在实验地区放养这种蝲蛄,观察其是否能降低埃及血吸虫中间宿主非洲水泡螺的种群数量并进而降低学龄儿童埃及血吸虫的感染率。 Schistosomiasis has always been a very intractable problem in developing countries. Traditionally, schistosomiasis control mainly depends on drug chemotherapy and molluscicide, but there are still problems that can not prevent re-infection and environmental pollution. Previous studies have found that there is a Procambarus clarkii can reduce or even extinction of snail population through predation and food competition. In this study, we collected this catfish in the experimental area to observe whether it can reduce the population of African snails in the intermediate host of Schistosoma japonicum and further reduce the infection rate of schistosoma japonicum in school-age children.