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

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