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南洞县为大理州血吸虫病中度流行县，属典型的高山峡谷型流行区。1992年，该县被列为世界银行贷款血吸虫病控制项目（简称世行项目）县。按照世行项目的方案及实施细则，开展一系列防治工作，并于1996年底达项目要求，现总结如下。1策略与措施1．1基线调查1992年，用尼龙袋集卵
South Dong County for the moderate epidemic of Dali schistosomiasis County, is a typical alpine gorge epidemic. In 1992, the county was listed as the World Bank loan control project for schistosomiasis (World Bank project) counties. In accordance with the program and implementation details of the World Bank project, a series of prevention and control work was carried out and reached the requirements of the project by the end of 1996. The conclusions are as follows. 1 Strategies and Measures 1.1 Baseline Survey In 1992, the eggs were collected in nylon bags