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目的按照国家血吸虫病疫情控制评估要求,评估四川省血吸虫病疫情控制的效果。方法采用回顾性调查方法收集2003-2007年间全省血吸虫病防治各项指标数据;2007年采用现场调查方法调查居民和家畜的感染情况,钉螺分布情况,核查防治资料的完整性和准确性。结果2003-2007年全省居民感染率从0.16%降至0.08%;家畜感染率为从3.68%降至0.18%;急性血吸虫病逐年下降,从58例降为0;实有钉螺面积从7018.62万m2降至2568.88万m2;感染性钉螺从626只降至0。2007年现场调查24个县72个村,人群平均感染率为0.19%,有23个村查出阳性患者,以村为单位感染率最高为1.37%;耕牛平均感染率为0.13%,有4个村有病牛,以村为单位感染率最高为1.92%;查出有螺环境388处,22.5389万m2,活螺平均密度为0.18只/0.1m2,无阳性钉螺。血防资料完整,能够反映当地的血吸虫疫情和防治工作情况,及逐年动态变化情况。资料核查和走访调查表明,2007年无急性血吸虫病病例发生。结论2004年以来四川省血吸虫病疫情逐年下降,各项指标已达到了我国血吸虫病疫情控制标准。
Objective To assess the effect of schistosomiasis control in Sichuan Province in accordance with the requirements of the national schistosomiasis control assessment. Methods A retrospective survey was conducted to collect the data of various indicators of schistosomiasis prevention and control in the province during 2003-2007. In 2007, field investigation was conducted to investigate the infection status of domestic and domestic animals and the snail distribution, and to check the completeness and accuracy of prevention and control data. Results The infection rate of residents across the province decreased from 0.16% to 0.08% from 2003 to 2007; the infection rate of domestic animals dropped from 3.68% to 0.18%; the incidence of acute schistosomiasis dropped year by year from 58 to 0; and the area with snails actually increased from 70.1862 million m2 dropped to 25,688,800 m2; Incontinence dropped from 626 to 0. In 2007, field survey was conducted in 72 villages in 24 counties with an average infection rate of 0.19%. In 23 villages, positive patients were detected and villages were infected The highest rate was 1.37%. The average infection rate of cattle was 0.13%. There were 4 villages with disease and the highest infection rate was 1.92% in village. There were 388 snails with 225.589 million m2 of snails, average density of live snails 0.18 /0.1m2, no positive snails. Complete blood and blood protection information to reflect the epidemic of schistosomiasis and prevention and control work, as well as dynamic changes year by year. Data verification and interview surveys showed no cases of acute schistosomiasis in 2007. Conclusion The epidemic situation of schistosomiasis in Sichuan Province has been declining year by year since 2004. The indicators have reached the control standard of the epidemic situation of schistosomiasis in our country.