Abstract:

Objective To establish an index system for rapid assessment of environment with high transmission risk of schis? tosomiasis in marshland and lake regions. Methods The alternative indices were established preliminarily by the documentary method，and then the Delphi method was used two rounds to select the indices and establish the index system. The degree of famil? iar and authority of the experts as well as the weights of all indices were assessed. Results A total of 3 primary indices namely morbidity in domestic animals，morbidity in humans and Oncomelania snail status were established，among which the weight of morbidity in domestic animals（0.68）was the highest. Totally 16 secondary indices were established，among which the combina? tive weights of the positive rate of wild feces（0.09），the infection rate of livestock（0.09），the infection rate of humans（0.07）， the number of cases with acute schistosomiasis（0.07），the area with infected snails（0.07），and the density of infected snails （0.07）were the highest. The coefficients of familiar degree and authority degree of the experts of the primary indices were 0.79-0.85 and 0.88-0.91，and those of the secondary indices were 0.68-0.86 and 0.77-0.91，respectively. Conclusions The in? dex system for rapid assessment of environment with high transmission risk of schistosomiasis in marshland and lake regions is es?tablished preliminarily. Using this system，we can assess the key endemic indices of humans，domestic animals and snails to understand the endemic situation in the investigated sites.

Key words: Schistosomiasis；Transmission；Environment with high risk；Delphi method；Index system；Marshland and lake region

摘要：

目的 建立湖沼型血吸虫病流行区高危传播环境快速评估的指标体系。方法 通过文献法初步构建湖沼型血吸虫病流行区高危传播环境快速评估的备选指标， 应用两轮德尔菲法对备选指标进行筛选并确定指标体系， 并对专家的熟悉程度和权威程度以及各指标的权重进行评价。 结果 共制定一级指标3项，分别是家畜疫情、 人群病情和螺情， 其中家畜疫情的权重最高， 为0.68。共制定二级指标16项， 其中野粪阳性率 （0.09） 和家畜感染率 （0.09）、 人群感染率 （0.07） 和急性血吸虫感染例数 （0.07）、 感染螺密度 （0.07） 和感染螺面积 （0.07） 的组合权重最高。一级指标专家熟悉程度系数为0.79～ 0.85， 权威程度系数为0.88～0.91； 二级指标专家熟悉程度系数为0.68～0.86，权威系数为0.77～0.91。结论 初步建立湖沼型血吸虫病流行区高危传播环境快速评估指标体系， 该指标体系可对流行区人、 畜和钉螺关键疫情指标进行评估， 以掌握调查地的疫情状况。

关键词: 血吸虫病； 传播； 高危环境； 德尔菲法； 指标体系； 湖沼型地区