Abstract:

Objective To understand the epidemic trend of schistosomiasis in Sichuan Province so as to provide the evidence for formulating schistosomiasis control strategy. Methods According to the National Schistosomiasis Surveillance Protocol, the na? tional surveillance sites in Sichuan Province were selected. The schistosomiasis surveillance was carried out continuously from 2005 to 2010. Results Nine national schistosomiasis surveillance sites were established in Pujiang, Guanghan, Zhongjiang, Fucheng, Dongpo, Danling, Renshou, Xichang and Dechang counties. The Oncomelania hupensis snail area decreased from351 853 m2 in 2005 to 128 285 m2 in 2010, the snail density from 0.70 to 0.21 per 0.1m2 , the snail infection rate from 0.06% to 0, the positive rate of human serum schistosome antibody from 19.41% to 7.62%, the schistosome infection rate of human population from 1.93% to 0.10%, and the infection rate of livestock from 4.50% to 1.02%. The snails were found mainly in ditch, rice field and other moist field. Conclusions Though the endemic of schistosomiasis has reached a low level in Sichuan Province, the endemic situation fluctuates at a narrow range in some surveillance sites. Therefore, the surveillance work should be carried out continuously.

摘要：

目的 目的 了解四川省血吸虫病流行趋势和疫情变化规律， 为制定血吸虫病防治策略提供参考依据。 方法 方法 按照平坝、 丘陵、 山区3种山丘亚型， 选择9个血吸虫病监测点进行纵向观察。2005-2010年每年在监测点开展人畜病情、 螺情和相关因素调查， 比较逐年血吸虫病疫情指标变化趋势。 结果 结果 2005-2010年9个监测点钉螺总面积从351 853 m2 下降到 128 285 m2 ， 活螺密度从0.70只/0.1 m2 下降到0.21只/0.1 m2 ， 钉螺感染率从0.06%下降到0， 钉螺主要分布在沟渠和稻田等环境。2005-2010年监测点人群血吸虫抗体阳性率从19.41%下降到7.62%， 人群血吸虫感染率从1.93%下降到0.10%， 家畜血吸虫感染率从4.50%下降到1.02%。 结论 结论 四川省血吸虫病疫情总体上已趋于低度流行状态， 但局部地区仍有小幅波动， 应加强巩固监测工作。

关键词: 血吸虫病； 疫情；监测；四川省