关键词: 血吸虫病； 监测； 疫情； 云南省

Abstract: Objective Objective To master the dynamic endemic status and influencing factors of schistosomiasis in Yunnan Prov? ince，so as to provide the evidence for making the control and prevention measures. Methods Methods Four villages of four schistosomi? asis heavy endemic counties were selected as survey sites. Then，the serological screening and etiological tests were carried out in the residents，and the basic situations of the survey sites were investigated. The infection status of the livestock and relevant information of Oncomelania hupensis snails were surveyed. All the results were analyzed statistically. Results Results Totally 4 310 res? idents were surveyed by the indirect hemagglutination assay with the examination rate of 79.68% and serum positive rate of 8.40%. The positive rate reached upwards 12.53% in Qiandian Village of Eryuan County. The serum positive rate of the female was higher than that of the male，and the positive rates of the 30 years and older age groups were higher than those of the other age groups. The serum positive rates of the peasants，migrant labourers and residents with the junior high school education level were higher. No positive feces were found. A total of 24 advanced cases were reported. No positive livestock and snails were found，and the average density of living snails was 0.023 3-0.056 6/0.1 m2 . Conclusion Conclusion Right now，the schistosomiasis is at a low prevalence status in Yunnan Province，and the endemic situation has been effectively controlled.

Key words: Schistosomiasis；Surveillance；Endemic situation；Yunnan Province