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目的:探讨血吸虫病中度流行区以疫水接触史确定化疗对象的筛检方法的真实性和可靠性及其防治效果。方法:以Kato—Katz法为参照标准,对同时接受粪检和疫水接触史调查的795人进行了灵敏度、特异度及符合率分析,并将此筛检方法付诸现场实施两年以考核其防治效果。结果:该方法总的灵敏度为80.0％。特异度为69.4％。符合率为70.6％.男女及各年龄组人群之间灵敏度无显著差异,但女性的特异度和符合率明显高于男性,除50岁以上,特异度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％。结论:以疫水接触电筛检化疗对象的防治措施具有良好的真实性和可靠性,并显示出较好的防治效果。
OBJECTIVE: To investigate the authenticity, reliability and control effect of the screening method for chemotherapy in the moderately endemic area of schistosomiasis with the history of exposure to water. Methods: The Kato-Katz method was used as the reference standard to analyze the sensitivity, specificity and coincidence rate of 795 people simultaneously receiving the survey of history of faecal and water exposure and put the screening method on site for two years Its control effect. Results: The overall sensitivity of the method was 80.0%. The specificity was 69.4%. The coincidence rate was 70.6%. There was no significant difference in sensitivities between men and women and all age groups, but the specificity and coincidence rate of women were significantly higher than those of men. Except for those over 50 years old, the specificity and coincidence rate showed a declining trend with age Through two consecutive years of contact with the history of water exposure to determine the treatment of chemotherapy and treatment, men and women and all age groups were significantly lower than before infection infection rates, the total infection rate decreased 66.4%. Conclusion: The control measures against contaminated water by contact with electroplating water have good authenticity and reliability, and show good prevention and cure effects.