兴化市位于苏北里下河地区,建国前常有水、旱灾害,许多农民在秋后即去苏南农村种田、做工、摸鱼虾,感染了血吸虫病.刘六和戴南为血吸虫病非流行乡,1973年我们对这两个乡有外出史的人群进行了综合查病.为了解他们的肝脾现状,皮内试验和粪便化验转阴情况,抗体消失程度.20年过去了,1993年我们又对直肠镜检查阳性的299例血吸虫病人进行了复查,结果报告如下. Xinghua City, located in the Lixia River in northern Jiangsu Province, often had water and drought disasters before the founding of the People’s Republic of China. Many farmers started to farm in the rural areas of southern Jiangsu in the autumn and worked on fish and shrimp, infecting schistosomiasis. In 1973, we conducted a comprehensive investigation of the people who had been out of history in these two townships to understand the status of their liver and spleen, the intradermal and fecal laboratory tests, and the extent of antibody vanishing. In 1993, we reexamined 299 cases of schistosomiasis positive for proctoscopy, and the results are reported below.