Abstract:

Objective To understand the endemic situation of schistosomiasis among 81 national surveillance sites in China
in 2011. Methods The data of the Oncomelania snail status，schistosomiasis in residents and domestic animals，and other rele?
vant factors were collected and analyzed for the epidemic characteristics and changes in different areas in the 81 national surveil?
lance sites in 2011. Results Among the 81 national surveillance sites，the average positive rate of residents with serum examina?
tions and the average infection rate of the residents were 7.78% and 0.54%，respectively，and the infection rate of domestic ani?
mals was 0.97% in 2011，which all decreased compared with the rates of 2010. The area of infected snail habitats was 98.30 hm2.
The mean densities of living snails and infected snails were 0.222 6 snails/0.1 m2 and 0.000 3 snails/0.1 m2，respectively. The in?
fection rate of snails was 0.14%. The number of domestic animals opened on areas with snails was 12 422，which increased by
46.99% compared with that in 2010. Conclusions The endemic situation of schistosomiasis improves in 2011 compared with that
in 2010. However，the improvement is not great. Therefore，the management of domestic animals as the major infectious source
should be further strengthened.
 

Key words: Schistosomiasis；Endemic situation；Surveillance；China

摘要：

目的了解2011年全国81个血吸虫病监测点疫情变化趋势。方法收集2011年全国81个血吸虫病监测点螺情、人畜病情和相关因素的调查数据，分析不同地区疫情特征及变化情况。结果2011年全国血吸虫病监测点血清学检测阳性率以及居民感染率分别为7.78%和0.54%，家畜感染率为0.97%，较2010年均有所下降。2011年81个血吸虫病监测点共查出感染性钉螺面积98.30 hm2，活螺平均密度为0.222 6只/0.1 m2，感染性钉螺平均密度为0.000 3只/0.1 m2，钉螺感染率为0.14%。有螺地带敞放家畜12 422头，比2010年上升46.99%。结论2011年全国血吸虫病监测点疫情较2010年下降不明显。仍需加大家畜传染源控制措施的实施力度。

关键词: 血吸虫病；疫情；监测；中国