关键词: 血吸虫病；疫情评价；指标体系；德尔菲法；钉螺

Abstract:

Objective To establish a scientific，objective and operational assessing system for schistosomiasis endemicity，
so as to provide a scientific evidence for revising the current Criteria for Control and Elimination of Schistosomiasis in China（GB
15976-2006）. Methods A questionnaire was designed based on reference review and 20 scientists working in the field of schisto?
somiasis control，research or management were investigated by using the Delphi method. The importance of each index reflecting
the endemicity of schistosomiasis was scored by each scientist. The assessing system for endemicity of schistosomiasis was estab?
lished and the normalized weight and combined weight were calculated. Results The assessing system included three indices in
the first grade and seven indices in the second grade. Among the indices in the first grade，the normalized weights of infection sta?
tus of human beings，infection status of livestock，and Oncomelania snail’s status were 0.360 2，0.335 2，and 0.304 6，respec?
tively. Among the indices in the second grade，the prevalence of livestock showed the highest combined weight of 0.335 2 while
the infection rate of snails showed the lowest score of 0.093 3. Conclusions The indexes of the assessing system for the endemici?
ty of schistosomiasis established are reasonable，comprehensive，and authoritative，which provide the scientific evidence for revis?
ing the currently available Criteria for Control and Elimination of Schistosomiasis in China.

Key words: Schistosomiasis；Endemicity assessment；System of criteria；Delphi method；Oncomelania hupensis