【摘要】 目的准确、及时了解血吸虫病流行现状,掌握流行规律,为制订调整血吸虫病防治策略和评价防治效果提供科学依据。方法采用系统抽样和环境抽样方法对全部现有钉螺环境和可疑环境进行查螺。结果 5年中四川省的有螺面积由351 853m2下降为142 983m2,活螺密度由0.70只/框(每框=0.11m2)下降为0.33只/框,钉螺感染率由0.06%下降为0%,2007-2009年全省均未发现阳性钉螺;但沟渠仍是该省钉螺最多的环境。结论各监测点螺情指标2009年比2005年有显著下降;四川省应进一步开展监测和巩固措施,防止达到血吸虫病传播控制标准后的疫情反复。更多还原

【Abstract】 Objective To learn about the current status of schistosomiasis epidemic in Sichuan province,provide scientific evidence for the development or revise of schistosomiasis prevention and control measures and the evaluation of control effort.Methods Water-snail survey was conducted in the areas where Oncomelania was found or might be found by systematic sampling and environmental sampling.Results The area with water-snail declined from 351 853 m2 in 2005 to 142 983 m2 in 2009,the water-snail density declined from 0.7 per 0.11m2 to 0.33% per 0.11m2 and the water-snail infection rate declined from 0.06% to 0%.Since 2007,no infected water-snail had been found.Most water-snails were found in ditches.Conclusion The indicators of the survey showed that the water-snails density and infection rate in all surveillance sites was lower in 2009 than in 2005.It is necessary to strengthen the surveillance and maintain prevention and control effort to prevent the re-emergency of schistosomiasis transmission in Sichuan province.更多还原