Abstract: Objective To understand the endemic trend of echinococcosis in Yunnan Province for evidence to optimize the prevention and control measures for this infection. Methods The particular cases of echinococcosis in Yunnan Province reported in China Disease Prevention and Control Information System were obtained from 2005 to 2020,and statistically analyzed by descriptive epidemiology. Results Totally,134 cases of echinococcosis were reported throughout the 16 autonomous prefectures (cities) and 65 counties (districts) in Yunnan Province from 2005 to 2020. The cases reported most were topped by Dali prefecture( n= 37),Kunming City( n= 20) and Diqing prefecture(n = 10),and the top three incidence was Diqing prefecture(0. 157 1 / 100 000),Nujiang prefecture(0. 092 8 / 100 000) and Dali prefecture(0. 065 4 / 100 000). The male / female ratio was 1: 1. The occupation was associated with farmer / herdsman ( 55. 22%, n= 74 ) and students (12. 69%, n= 17). The youngest patient was only one year old,and the oldest was 81 years. The infection was the most seen in population aged from 21 and 50 years,with 70 cases (52. 24%) reported. 82. 84%(111 / 134) of the patients were confirmed as echinococcosis during the right years of infection,and 17. 16% (23 / 134) were confirmed by the second year after infection. One hundred and nine cases(81. 34%) were reported by medical institutions,and 16 (11. 94%) by CDC. Conclusion The cases of echinococcosis reported online in Yunnan Province tends to increase,yet underreporting still exists, for which we should strengthen management of reporting system,implement active disease screening in population in areas of higher risks,and provide health education for the target population.

Key words: Echinococcosis, Epidemiology, Reported Case, Yunnan Province