A Two-Year Surveillance of 2009 Pandemic Influenza A (H1N1) in Guangzhou, China: From Pandemic to Seasonal Influenza?

被引:11
|
作者
Li, Tiegang [1 ]
Fu, Chuanxi [1 ]
Di, Biao [1 ]
Wu, Jibin [1 ]
Yang, Zhicong [1 ]
Wang, Yulin [1 ]
Li, Meixia [1 ]
Lu, Jianyun [1 ]
Chen, Yiyun [1 ]
Lu, Enjie [1 ]
Geng, Jinmei [1 ]
Hu, Wensui [1 ]
Dong, Zhiqiang [1 ]
Li, Meng-feng [2 ,3 ]
Zheng, Bo-Jian [4 ]
Cao, Kai-yuan [2 ,3 ]
Wang, Ming [1 ]
机构
[1] Guangzhou Ctr Dis Control & Prevent, Guangzhou, Guangdong, Peoples R China
[2] Sun Yat Sen Univ, Sch Med, Dept Microbiol, Guangzhou 510275, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Minist Educ, Key Lab Trop Dis Control, Guangzhou 510275, Guangdong, Peoples R China
[4] Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China
来源
PLOS ONE | 2011年 / 6卷 / 11期
关键词
UNITED-STATES; VIRUS; ENGLAND;
D O I
10.1371/journal.pone.0028027
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this two-years surveillance of 2009 pandemic influenza A (H1N1) (pH1N1) in Guangzhou, China, we reported here that the scale and duration of pH1N1 outbreaks, severe disease and fatality rates of pH1N1 patients were significantly lower or shorter in the second epidemic year (May 2010-April 2011) than those in the first epidemic year (May 2009-April 2010) (P<0.05), but similar to those of seasonal influenza (P>0.05). Similar to seasonal influenza, pre-existing chronic pulmonary diseases was a risk factor associated with fatal cases of pH1N1 influenza. Different from seasonal influenza, which occurred in spring/summer seasons annually, pH1N1 influenza mainly occurred in autumn/winter seasons in the first epidemic year, but prolonged to winter/spring season in the second epidemic year. The information suggests a tendency that the epidemics of pH1N1 influenza may probably further shift to spring/summer seasons and become a predominant subtype of seasonal influenza in coming years in Guangzhou, China.
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页数:5
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