Changes of Epidemic Characteristics of Brucellosis in China,2006-2017
ZHANG Xia-nan1, ZHANG Hong-wei1, JI Ying1, WANG Qiu-fang1, XIE Li-jing1, YE Meng2
1. Yanjing Medical College, Capital Medical University, Beijing 101300, China; 2. National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
Abstract:This study explored the changes of spatial, seasonal and age distribution of brucellosis in China from 2006 to 2017. Data was analyzed by four time periods: 2006-2008 years, 2009-2011 years, 2012-2014 years and 2015-2017 years. The spatial trend of brucellosis was studied by hierarchical map, global and local spatial autocorrelation analysis, while seasonal epidemic characteristics was analyzed by circular and concentration degree method. The constituent ratio was used to describe the change of age distribution. Analysis showed that the number of provinces with brucellosis increased from 28 to 31. The cumulative incidence rate increased significantly in Ningxia and Xinjiang. The global Moran’s I index was ranging from 0.190 to 0.377 (Z value from 2.861 to 4.368, P<0.05) in the four time periods; local autocorrelation analysis showed that the high-high clustering area was located in the northern region, while the low-low clustering area was located in the southern region. The M value and R value decreased from about 3.38 to about 2.25. The highest constituent ratio was found in age group of 35-54 among the four periods, but the constituent ratio of under 15 years old and above 65 years old increased. In conclusion, there are still differences between the north areas and the south areas with brucellosis. The seasonal trend is not obvious, however the attention should be paid to both the occupational population and the general population.
张夏男, 张洪伟, 纪颖, 王秋芳, 谢立璟, 叶萌. 2006-2017年全国布鲁氏菌病流行特征变化分析[J]. 中国人兽共患病学报, 2020, 36(11): 918-921.
ZHANG Xia-nan, ZHANG Hong-wei, JI Ying, WANG Qiu-fang, XIE Li-jing, YE Meng. Changes of Epidemic Characteristics of Brucellosis in China,2006-2017. Chinese Journal of Zoonoses, 2020, 36(11): 918-921.