2003-2012年南京市江宁区江滩地区血吸虫病综合治理防治效果

目的观察江宁区2003--2012年江滩地区血吸虫病综合治理的效果。方法收集2003—2012年江宁区沿江流行区血吸虫病疫情资料及血吸虫病综合防治情况资料．分析比较血防综合治理前后血吸虫病病情、螺情变化情况。结果江宁区沿江江滩地区通过近10年的综合治理，居民的血吸虫感染率逐渐下降，2003年为0．97％，2006年后未再发现粪检阳性患者；家畜感染率也逐渐下降，2003年为0．60％（4／671），到2007年沿江地区的所有耕牛被淘汰；2003年钉螺面积为1084ha（1ha=10000m2），钉螺密度为1．54只，0．1m2：阳性螺面积279ha，2012年钉螺面积和钉螺密度分别为475ha和0．01只／0．1m2，较2003年分别下降了52．94％和99.35％．2009年起未再发现感染性钉螺。结论通过血吸虫病综合治理，江宁区沿江江滩地区血吸虫病疫情已处于较低流行水平，但仍需加强监测，巩固防治成果。

Effect of an integrated intervention for schistosomiasis control implemented in marshlands of Jiangning District,Nanjing City from 2003 to 2012

Objective To evaluate the effect of an integrated intervention for schistosomiasis control implemented in marshlands of Jiangning District, Nanjing City from 2003 to 2012. Methods The data regarding the endemic situation of schistosomiasis and the integrated intervention for schistosomiasis control implemented in the endemic regions along the Yangtze River, Jiangning District from 2003 to 2012 were collected, and the changes of morbidity due to schistosomiasis and snail status before and after the implementation of the in- tegrated intervention were compared. Results The 10-year implementation of the integrated intervention for schistosomiasis control resulted in a gradual decline in the human Schistosoma japonicum infection in the marshland regions along the Yangtze River of Jiangning District, the schistosome infection rate of the residents was 0.97% in 2003 while no stool-positive resident has been detected since 2006. In addition, the infection rate of S. japonicum in domestic animals was 0.60%（4/671 ） in 2003, and all cattles have been eliminated in the regions along the Yangtze River since 2007. The snail areas and the density of living snail declined from 1 084 ha（1 ha=tO 000 m2） and 1.54 head/0.1 m2 in 2003 to 475 ha and 0.01 head/0.1 mE in 2012, the decline rates were 52.94% and 99.35%. In 2003 the area with infected snails was 279 ha while no infected snails have been found since 2009. Conclusions Owing to the 10-year implementation of the integrated intervention for schistosomiasis control, the endemic situation of schistosomiasis has been down to a low level in the marshland regions along the Yangtze River of Jiangning District; however, the monitoring of schistosomiasis should be still strengthened to consolidate the achievements gained.