关键词: 钉螺；血吸虫病；螺情；海陵区

Abstract: Objective To understand the current status of Oncomelania hupensis snails and the change rules， so as to provide the evidence for formulating the snail control strategy. Methods The data of snails were collected and the factors influencing the changes of snail status were investigated， and all the data were analyzed in Hailing District from 2007 to 2014. Results There were 18 environments with snails in 17 villages of 3 townships in Hailing District from 2007 to 2014. The snail area was 7.832 4 hm2. Among these environments and snail areas, 6 environments and 2.134 5 hm2, snail area were detected by the village snail investigation groups, and 12 environments and 5.697 9 hm2 snail area were detected by the township snail investigation groups. In addition, in 5 non?endemic villages, 3.126 3 hm2 snail area was found. In 2008, 2012 and 2013, a total of 2.274 0 hm2 snail area was found again. Conclusions In recent years， the snail situation rises again after schistosomiasis transmission has been interrupted. Therefore， this situation should be paid attention to.

Key words: Oncomelania hupensis； Schistosomiasis； Snail status； Hailing District