全椒县大里镇大饶村的大马村民组位于全椒县中西部地区，历史上未有血吸虫病流行记载。60、70年代，曾两次组织专业人员查螺，均未发现钉螺。但自1995年5月份开始先后有11人在宣城地区二院经血吸虫病环卵沉淀试验（COPT）诊断为疑似血吸虫病患者，其中一人诊断为“晚血”，于19 Dajiao Village, Dali Town, Quanjiao County, is located in the central and western regions of Quanjiao County. There is no record of schistosomiasis prevalence in history. In the 1960s and 1970s, two professional staffs were found to find snails and none of them found snails. However, since May 1995, 11 people have been diagnosed as suspected schistosomiasis by the Schistosoma japonicum Ovovariate Test (COPT) in the second hospital of Xuancheng District, one of them diagnosed as “late blood” and 19