武汉市2008年血吸虫病监测结果分析

Analysis of the surveillance of schistosomiasis in Wuhan(2008)

目的开展血吸虫病监测,以掌握该年度武汉市血吸虫病流行状况及影响因素,为制定进一步的防治对策提供依据。方法以行政村为单位,采用分层整群随机抽样方法确定监测点。对远城区监测点进行人群病情监测、耕牛病情监测及螺情监测;对中心城区监测点进行沿江居民(或沿江中小学校学生)以及流动人口病情监测。结果全市30个监测点,共调查居民19012人,耕牛1622头,调查有螺及可疑环境34处1330.73万m2。居民粪检阳性率为0.32%,较2007年0.76%下降了57.89%。耕牛粪阳率为0.86%,较2007年1.33%下降了35.34%。垸内有螺面积4.20万m2,活螺平均密度0.0310～0.3529只/0.11m2,钉螺感染率为0;垸外有螺面积742.13万m2,活螺平均密度0.0065～1.1400只/0.11m2,钉螺感染率为0.59%。结论采取的综合防治措施取得了较明显的防治成效。

Objective To understand the epidemiological status and influencing factors of schistosomisis japonica in Wuhan in 2008, and provide basis for making control strategies. Methods The stratifying and clustering random sampling technique was used to determine the target villages in the suburban endemic areas where residents, cattle and snails were examined, some of the residents and floating population living along the Changjiang River in sentinel sites were also examined. Results In 30 surveillance sites, a total of 19 012 people and 1 622 cattle were examined. 34 spots with an area of 1 330.73 hm2 were surveyed. The infection rates of residents and cattle were 0. 32%, 0. 86%, respectively. Compared with the data in 2007, the infection rates of residents and cattle were reduced by 57.89%, 35.34%, respeetively. Inside and outside the embankment endemic areas ,the snail-infested areas were 4.20 hm^2 and 742.13 hm^2, respectively.And the rates of frames with living snails were from 2. 16% to 10. 59% ,and from 0. 74% to 64. 00% ,respectively. And the infection rates of snails were 0. 00%, 0.59%, respectively. Conclusion The results show that the current comprehensive control strategy of schistosomiasis is effective.