OBJECTIVE We sought to evaluate the impact of a hygiene and sanitation intervention program among school-children to control active trachoma and intestinal parasitic infections. METHODS This longitudinal epidemiologic study was conducted among 630 students in rural Ethiopia. Baseline and follow-up surveys were conducted to evaluate the impact of a three pronged intervention program i) constructing of ventilated improved pit latrines, ii) provision of clean drinking water, and iii) and hygiene education. Socio-demographic information was collected using a structured questionnaire. Presence of trachoma and intestinal parasitic infections were evaluated using standard procedures. RESULTS At baseline 15% of students had active trachoma while 6.7% of them were found to have active trachoma post intervention (p<0.001). Similar improvements were noted for parasitic infections. At baseline 7% of students were reported to have helminthic infections and 30.2% protozoa infections. However, only 4% of students had any helminthic infection and 13.4% (p<0.001) of them were found to have any protozoa infection. Improvements were noted in students' knowledge and attitudes towards hygiene and sanitation. CONCLUSIONS The results of our study demonstrated that provision of comprehensive and targeted sanitation intervention program was successful in reducing the burden of trachoma and intestinal parasitic infection among school children.

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校本干预：埃塞俄比亚水，泌尿激素和卫生教育对沙眼和肠道寄生虫感染的作用评估。

目的我们试图评估一项卫生和卫生干预计划对学龄儿童控制活动性沙眼和肠道寄生虫感染的影响。方法这项纵向流行病学研究在埃塞俄比亚农村地区的630名学生中进行。进行了基线和后续调查，以评估以下三项干预计划的影响：i）建造通风良好的坑式厕所，ii）提供清洁饮用水，iii）和卫生教育。社会人口统计学信息是使用结构化问卷收集的。使用标准程序评估沙眼和肠道寄生虫感染的存在。结果在基线时，有15％的学生患有活动性沙眼，而在干预后发现其中有6.7％的人患有活动性沙眼（p <0.001）。注意到寄生虫感染也有类似的改善。在基线时，据报告有7％的学生患有蠕虫感染和30.2％的原生动物感染。但是，只有4％的学生有蠕虫感染，其中13.4％（p <0.001）被发现有原生动物感染。注意到学生对卫生和卫生的知识和态度有所改善。结论我们的研究结果表明，提供全面而有针对性的卫生干预计划可以成功地减轻小学生沙眼和肠道寄生虫感染的负担。其中001）被发现有任何原生动物感染。注意到学生对卫生和卫生的知识和态度有所改善。结论我们的研究结果表明，提供全面而有针对性的卫生干预计划可以成功地减轻小学生沙眼和肠道寄生虫感染的负担。其中001）被发现有任何原生动物感染。注意到学生对卫生和卫生的知识和态度有所改善。结论我们的研究结果表明，提供全面而有针对性的卫生干预计划可以成功地减轻小学生沙眼和肠道寄生虫感染的负担。