Abstract:

Objective To evaluate the effect of comprehensive control of schistosomiasis in the Biamin River water system. Methods The distribution of Oncomelania snails and schistosome infections of residents and cattle were investigated longitudinal? ly in Biamin River system from 2000 to 2011. Results After the comprehensive control of schistosomiasis，the average densities of infected snails decreased from 0.013 snails/0.1 m2 to 0，the average densities of living snails decreased from 7.43 snails/0.1 m2 to 0.38 snails/0.1m2 ，the infected snail area decreased from 0.08 hm2 to 0，the snail area decreased from 17.84 hm2 to 10.57 hm2 ， and the crowd serological positive rate decreased from 6.90% to 0.96%. Conclusions The snail habitats have been eliminated ob? viously by the comprehensive measures including concrete banks of rivers connecting with the Yangtze River. Thus the schistosomi? asis situation has been controlled effectively. However，the snail spread from other schistosomiasis endemic places could not avoid? ed，so we still need to strengthen the snail surveillance and snail control of the rivers connecting with the Yangtze River.

Key words: Schistosomiasis； Oncomelania snail；Riparian hardening； Comprehensive control； Biamin River

摘要：

目的 评价便民河水系血吸虫病综合治理效果。方法 纵向观察2000-2011年便民河水系综合治理后钉螺分布及人畜血吸虫感染情况。结果 便民河水系综合治理后， 感染螺密度从0.013只/0.1 m2 下降至0， 活螺密度从7.43只/0.1 m2 下降至0.38只/0.1 m2 ， 感染螺面积从0.08 hm2 下降至0， 钉螺面积从17.84 hm2 下降至10.57 hm2 ， 人群血清学阳性率从6.90% 下降至0.96%。结论 便民河水系实施混凝土护坡综合整治消除了钉螺孳生地， 有效控制了血吸虫病疫情； 但不能消除钉螺扩散， 仍须做好通江河口的钉螺监测和控制。

关键词: 血吸虫病； 钉螺； 河岸硬化； 综合治理； 便民河