Epidemiological characteristics on the clustering nature of pandemic (H1N1) 2009 in China
10.3760/cma.j.issn.0254-6450.2012.01.014
- VernacularTitle:中国2009年甲型H1N1流感大流行聚集性疫情分析
- Author:
Jing-Hong SHI
1
;
Ni-Juan XIANG
;
Yan-Ping ZHANG
;
Min CHEN
;
Shan-Hua SUN
;
Tao CHEN
;
Fan YUAN
;
Li-Jie WANG
;
Jing YANG
;
Li-Mei YANG
;
Pei-Long LI
;
Chun-Xiang FAN
;
Dao-Wei YANG
;
Yong ZHAO
;
Peng XU
;
Qing-Long ZHAO
;
Jun ZONG
;
Yang ZHANG
;
Cui-Ling XU
;
Yue-Long SHU
;
Zi-Jian FENG
Author Information
1. 中国疾病预防控制中心病毒病预防控制所
- Keywords:
Pandemic (H1N1) 2009;
Clustering;
Epidemiologic characteristics
- From:
Chinese Journal of Epidemiology
2012;33(1):62-66
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the epidemiological characteristics on the clustering nature of pandemic (H1N1) 2009 in China.Methods Time and place distribution of pandemic (H1N1) 2009on the nature of clustering through data from Public Health Emergency Management Information System were described.Results As of August 10,2010,2773 pandemic (H1N1) 2009 clusters,a total of 77363 cases (including 20 deaths) were reported in the mainland of China.The most reported number of clusters was from schools and kindergartens with the total number of 2498 (accounted for 90.08％ of the total number).Middle schools appeared the have the most clusters (1223,accounting for 48.96％ ).The number of clusters reported in the southern provinces (cities) accounted for 77.03％ of the total,and was more than that in the northern provinces (cities).Two reported peaks in the southern provinces (cities) were in June and November,2009,respectively.There was only one reported peakin the northern provinces in September,2009.Conclusion Time and place distribution characteristics on the clusters of pandemic (H1N1) 2009 were similar to the seasonal influenza,but the beginning of winter peak was much earlier and intensity of reporting was much higher on the clusters of pandemic (H1N1 ) 2009 than that of seasonal influenza.
