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人畜同步化疗消灭传染源是控制血吸虫病的关键［’－‘］，世行项目亦强调耕牛普治及选择化疗为其重要策略［’1。安徽省在利用世行贷款控制血吸虫病项目执行期间，人群感染率明显下降，而耕牛血吸虫病防治不力，现阶段耕牛成为本省洲滩地区主要传染源，牛粪对有螺滩地污染极为
Simultaneous human-animal chemotherapy to eradicate the source of infection is the key to control schistosomiasis [2]. The World Bank project also emphasizes the importance of catalunya and choice of chemotherapy as its key strategy [1]. During the implementation of the project of controlling schistosomiasis by World Bank Loan, Anhui Province has obviously decreased the population infection rate and the prevention and treatment of tragedy schistosomiasis. At this stage, the cattle became the main source of infection in Chau Beach, and the cow dung was extremely polluting