109 / 2019-10-31 16:18:32

湖南省2013-2018年人感染H7N9禽流感空间流行病学研究

人感染H7N9禽流感；GIS；相关；空间自相关

Spatial Epidemiology of human avian influenza A(H7N9) in Hunan Province from 2013 to 2018

Abstract
Objective: To find out the epidemiological characteristics of human avian influenza A(H7N9) in Hunan Province, to provide the foundation for resource allocation and human avian influenza A(H7N9) prevention and control strategies of Hunan Province.
Methods: Collecting medical records of human avian influenza A(H7N9) in Hunan Province from 2013 to 2018. χ2 test was used to analysis the difference. Spatial autocorrelation was used to explore the clustering of the epidemic. Trend surface analysis was used to predict the epidemic.
Results: In 2013-2018, the average incidence of human avian influenza A(H7N9) is 0.292 (1/1 million); males have more morbidity than females; mainly middle-aged and elderly; the incidence month is concentrated from January to April. In 2014 and 2017, there were clusters of human avian influenza A(H7N9) in Hunan Province, concentrated in central Hunan, Changzhutan and Yueyang. The trend surface analysis showed that human avian influenza A(H7N9) in Hunan Province gradually increased from east to west in 2014. It gradually rises from north to south. In 2017, it gradually increased from west to east, and the north-south direction was generally similar.
Conclusion: Human avian influenza A(H7N9) cases are mainly concentrated in the central part of the province, Changzhutan and the Yueyang area. The key areas for future prevention and control are the central, eastern and southeastern regions of the province, especially for middle-aged and elderly people to do seasonal prevention work.
Keywords human avian influenza A(H7N9); GIS; related; spatial autocorrelation