Abstract:

Objective To analyze the status of Oncomelania snail recurrence after schistosomiasis transmission interrupted in
Chuxiong City，Yunnan Province，so as to provide the evidence for establishing the control strategy. Methods The data of snail
surveillance since 1994 were collected and analyzed. Results The schistosomiasis endemic situation was stable，but the area
with snails increased again seriously. In the years when the snail area was most（27.8 hm2 in 2004 and 28.0 hm2 in 2005），it
reached 12.9 times of the standard level. Conclusion The Oncomelania snail recurrence is obvious，therefore，the snail sever?
ance still need to be strengthened.

Key words: Schistosomiasis；Transmission interruption；Oncomelania hupensis；Chuxiong City

摘要：

目的 分析楚雄市血吸虫病传播阻断后钉螺复现情况，为制定防治策略提供依据。方法 收集、分析1994年以
来楚雄市血吸虫病螺情监测资料。结果 该市达到血吸虫病传播阻断标准后病情稳定；但钉螺面积回升较为严重，最严
重时有螺面积为达标年的12.9倍，较高年份出现在2004年和2005年，分别为27.8 hm2和28.0 hm2。 结论 楚雄市血吸虫
病传播阻断后钉螺复现较明显，仍需加强监测。

关键词:   血吸虫病；传播阻断；钉螺；楚雄市