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在血吸虫病中度流行区，对以疫水接触史确定化疗对象的筛检方法进行了其真实性和可靠性研究，并对其防治效果进行了纵向观察。结果表明，以ＫａｔｏＫａｔｚ 法为参照标准，该方法总的敏感性为８０．０ ％ ，特异性为６９．４ ％ ，符合率为７０ ．６％ ，男女及各年龄组人群之间敏感性无显著差异，但女性的特异性和符合率明显高于男性，除５０ 岁以上年龄组外，特异性和符合率随年龄增加而呈现下降的趋势；通过连续两年以疫水接触史确定化疗对象并予以治疗，男女及各年龄组人群感染率均较防治前明显下降，总感染率下降了６６ ．４％ ，显示出较好的防治效果。
In the moderately endemic area of schistosomiasis, the screening method for determining the target of chemotherapy based on the history of exposure to water was studied for its authenticity and reliability, and the longitudinal effect of its prevention and treatment was also observed. The results showed that the KatoKatz method as a reference standard, the method of total sensitivity was 80.0%, specificity was 69.4%, with a coincidence rate of 70%. 6%. There was no significant difference in sensitivities between men and women and all age groups. However, the specificity and coincidence rate of women was significantly higher than that of men. Except for those over 50 years old, the specificity and coincidence rate decreased with the increase of age The infection rates of both men and women and all age groups were significantly lower than those before the prevention and treatment, and the total infection rate decreased by 66. 4%, showing a better control effect.