Abstract:

Objective To understand the correlation between schistosomiasis endemic situation and Oncomelania snail sta?
tus，and discuss the control strategy and measures. Methods With a retrospective research method，the data were collected and
analyzed including the snail area，infected snail area，snail density，density of infected snails，the infection rate of snails，the pos?
itive rates of blood tests and stool examinations for schistosomiasis in residents and domestic animals，and the incidence of acute
schistosome infection in Yizheng City from 2002 to 2011. The correlation between the infected snails and schistosomiasis was ana?
lyzed. Results There were decline trends in snail area，infected snail area，and schistosomiasis situation. There were positive
correlations between the infected snail area and snail area（r = 0.732，P ＜ 0.05），the occurrence of acute schistosomiasis pa?
tients and infected snail area（r = 0.678，P ＜ 0.05），and the snail area and schistosome infection rate of residents（r = 0.774，
P ＜ 0.05）. Conclusion In order to control schistosomiasis，we need to control infected snails，reduce snail areas，and imple?
ment comprehensive control measures.

Key words: Schistosomiasis；Infected Oncomelania snail；Snail area；Correlation；Yizheng Centre

摘要：

目的 掌握仪征市钉螺与血吸虫病病情相关情况，探讨血吸虫病控制策略和措施。方法 采用回顾性研究方法，分析比较2002-2011年仪征市有螺面积、感染性钉螺面积、钉螺密度、感染性钉螺密度和钉螺感染率变化情况；流行村人群血检阳性率、粪检阳性率和急性血吸虫病发生率以及家畜粪检阳性率变化情况。对螺情与病情进行相关性分析。结果钉螺面积、感染性钉螺面积、血吸虫病情呈逐年下降趋势。感染性钉螺面积与钉螺面积、急性血吸虫病例与感染性钉螺面积、钉螺面积与居民血吸虫病感染率均呈正相关关系（r = 0.732，0.678，0.774，P 均＜ 0.05）。结论 控制血吸虫病疫情必须消灭感染性钉螺，压缩有螺面积，实施综合性防治措施。

关键词: 血吸虫病；感染性钉螺；钉螺面积；相关性；仪征市