安徽省当涂县乌溪镇、黄池镇原为血吸虫病重流行区，先后在９０年代初达到消灭血吸虫病标准。 １９９０～１９９７年未发现新感染病人。１９９８年夏季，乌溪镇发现了成批急性血吸虫感染病人（简称急感），与其相邻的黄池镇也出现了急感疑似病例。为此，我们对本次发病情况及该 Wu Town, Dangtu County, Anhui Province, Huang Chi-chuen, formerly endemic to schistosomiasis, reached the standard of eliminating schistosomiasis in the early 1990s. From 1990 to 1997, no newly infected patients were found. In the summer of 1998, a batch of patients infected with acute schistosomiasis were found in Wuxi Town (referred to as acute illness), and the suspicious cases of panic occurred in Huangchi Town adjacent to it. To this end, we on the incidence and the