2010年浙江省血吸虫病疫情监测结果分析

目的 及时掌握浙江省血吸虫病疫情动态变化,为制定防治策略提供科学依据.方法 根据<浙江省血吸虫病监测巩固方案(2007年修订版)>,对浙江省54个县的452个乡(镇)3 657个村开展螺情和疫情监测.螺情监测用系统抽样结合环境抽查法,查到的钉螺用压碎法检查血吸虫感染,用土埋结合药物方法灭螺;疫情监测用血清学筛查,对阳性者作粪检,检查有螺村和来自尚未控制血吸虫病县的人(畜).结果 在18个流行县(市、区)中查出有螺面积691 100 m2;解剖钉螺81 314只,未发现感染性钉螺.血清学检查194 186人,阳性2 853人,阳性率为1.47%;发现输入性血吸虫病病例9例,未发现本地粪检阳性的人(畜).结论 今后血吸虫病防治工作重点应是查灭残存钉螺和防控外来传染源.

Analysis on the epidemic surveillance of schistosomiasis in Zhejiang Province in 2010

Objective To investigate the epidemic status of schistosomiasis in Zhejiang Province, so as to provide scientific information for the strategy of schistosomiasis control. Methods The investigation of snail distribution, schistosomiasis monitoring were carried out according to "The guidelines for schistosomiasis surveillance and solidification in Zhejiang Province". The snails were investigated by the method of systematic sampling combined with environmental sampling. Snails were dissected to determine the infection status. Snails were controlled by environmental modification combined with molluscacide. Both the persons and livestock in the villages where the snails inhabited and from the counties where schistosomiasis was not controlled were screened by serological methods, and the positive cases were confirmed by fecal examination. Results The residual snails area was 691 100 m2 in 18 counties dispersed in 3 657 villages of 54 counties. No infective snails were found among 81 314 snails dissected. 194 186 individuals were subjected to serological examination and 2 853 persons ( 1.47% ) were positive. No native cases were found except 9 imported cases. Conclusion The control of residual snails and imported cases should be stressed for schistosomiasis control in the future.