Abstract:

From 2004 to 2012，fourteen Oncomelania snail remaining spots with an area of 31.954 hm2 were found in the his?
torical snail areas of Xiuzhou District，Jiaxing City. The recurrence time of snails was 5-39 years. These spots were mainly distrib?
uted in the complex breeding environments，such as paddy fields（37.15%），nursery stock fields（36.93%），mulberry fields
（16.09%），and ditches（6.82%）. A total of 8 370 snails were dissected and no infected ones were found. It suggests that the nurs?
ery stock fields should be included in the key points for snail surveillance in water?net areas where schistosomiasis transmission
has been interrupted.

Key words: Oncomelania snail；Recurrence；Surveillance；Water?net area；Jiaxing City

摘要：

2004-2012年嘉兴市秀洲区共在历史有螺区查出残存螺点14个，钉螺面积31.954 hm2。钉螺复现时间为5~39年，螺点主要分布在稻田、苗木林、桑（田）地、沟渠等复杂环境，分别占总有螺面积的37.15%、36.93%、16.09%和6.82%。共解
剖钉螺8 370只，未发现感染性钉螺。提示苗木林应列入水网型血吸虫病传播阻断地区螺情监测的重点。

关键词: 钉螺；复现；监测；水网地区；嘉兴市