仪征市地处长江北岸,辖区内沿江6个乡(镇)为血吸虫病流行区,流行区人口11.80万余。全市现有江滩面积3 000 hm~2,其中芦滩1 000 hm~2,大都沿江岸呈狭长型分布。上世纪80年代后,由于长江洪水不断,导致江滩有螺面积不断增加,至1993年已达170 hm~2,急性感染时有发生,血吸虫病疫情回升,如继续采取以灭螺为主的防治对 Yizheng City is located in the north bank of the Yangtze River, 6 townships (towns) along the Yangtze River in the area for the endemic area of ​​schistosomiasis, population of more than 11.80 million. The city’s existing riverbank area of ​​3000hm ~ 2, of which 1 000hm ~ 2, mostly along the river bank was long and narrow distribution. Since the 1980s, due to the continuous flooding of the Yangtze River, there has been an increase in the area of ​​conchospores, reaching 170 hm ~ 2 in 1993, and acute infections have occurred. The epidemic of schistosomiasis picked up. Prevention and treatment