目的探索喀斯特地形区血吸虫病传播阻断后疫情监测措施,以利巩固血吸虫病防治成果。方法采取螺情监测,及时处理残存的螺点,阻断传播途径,继续对疫区人群及动物宿主查病和对流动人口开展监测。结果1989～2008年20年中每年坚持查螺,其中巩固监测阶段1989～2000年累计在疫区查螺面积10259772m2,发现残存螺点面积4300m2,疫区小学生皮试阳性率0.57%,居民粪检795人全部阴性,动物鼠、犬、牛查病全部阴性;非疫区查螺面积13740434m2,未发现钉螺,学生皮试阳性率为零,居民粪检无阳性。净化阶段2001～2008年,疫区累计查螺面积4066843m2,居民血清抗体检测1959人,抗体阳性率0.25%,抗体阳性者粪检结果阴性,对鼠、犬、牛调查无阳性;非疫区居民抗体检测1230人,阳性率为0.16%,阳性者粪检结果均为阴性;外来流动人口血学检查334人,阳性率2.1%,对抗体阳性者粪检未发现血吸虫虫卵。结论喀斯特地形血吸虫流行区由于地形复杂,容易残留钉螺,坚持反复查螺查病是巩固防治成果的关键。 Objective To explore the monitoring of epidemic situation after schistosomiasis transmission in karst terrain to prevent and cure schistosomiasis. Methods The snail surveillance was adopted to deal with the remaining snail points in a timely manner and to block the route of transmission. The epidemic areas and animal hosts were continuously checked and the floating population was monitored. Results From 1989 to 2008, the surveyed snails were inspected every year for the first time in two decades. During the period of consolidation monitoring from 1989 to 2000, there were 10259772m2 of snails found in the affected areas. The remaining snail spots were found 4300m2. The positive rate of skin test in pupils in affected areas was 0.57% 795 were all negative, animal rats, dogs, cattle all negative check; pest free area Chaoshan area 13740434m2, snail was not found, the student skin test positive rate was zero, residents were not stool positive. In the cleanup phase from 2001 to 2008, the cumulative area of ​​snails in the affected areas was 4066843m2, among which 1959 were tested for serum antibody, the positive rate of antibody was 0.25%, negative for stool test and no positive for rats, dogs and cattle; Antibody detection 1230 people, the positive rate was 0.16%, positive stool test results were negative; floating population of 334 blood tests, the positive rate of 2.1%, antibody-positive stool did not find schistosomiasis eggs. Conclusion The prevalence of Schistosoma japonicum in Karst terrain is likely to remain oncomelania due to the complicated topography.