Research - Abstract

Cite this article:

Jinjian Fu, Sidong Chen, Jialin Chen, Jie Wang, Chenwen Ling. Epidemiological characteristics of Pandemic Influenza A (H1N1-2009) in Zhanjiang, China.
The Pan African Medical Journal. 2011;10:54

Key words: Disease outbreaks, epidemiology, Influenza A, H1N1, China

Permanent link: http://www.panafrican-med-journal.com/content/article/10/54/full

Received: 19/07/2011 - Accepted: 27/11/2011 - Published: 14/12/2011

© Jinjian Fu et al. The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Epidemiological characteristics of Pandemic Influenza A (H1N1-2009) in Zhanjiang, China

JinJian Fu^1,2, SiDong Chen^3,&, JiaLin Chen², Jie Wang², ChenWen Ling²

¹Department of Epidemiology, Southern Medical University, Guangzhou, China, ²Influenza Laboratory, Center for Disease Control and Prevention of Zhanjiang, Zhanjiang, China, ³School of public health, Guangdong Pharmaceutical University, Guangzhou, China

^&Auteur correspondant
Sidong Chen, School of public health, Guangdong Pharmaceutical University, Guangzhou 510006, China

Background

A novel influenza A virus strain (H1N1-2009) spread first in Mexico and the United Stated in late April 2009, leading to the first influenza pandemic of the 21^st century. The objective of this study was to determine the epidemiological and virological characteristics of the pandemic influenza A (H1N1-2009) in Zhanjiang, China

Methods

The case and outbreak reports of influenza-like illness (ILI) were collected from the Chinese information system of disease control and prevention and the influenza surveillance system of Zhanjiang city. Real-time RT-PCR was conducted, and epidemic and virological characteristics of the virus were analyzed using descriptive epidemiological methods and Chi-square trend tests

Results

A total of 276 reported cases were confirmed from July 16, 2009 to June 30, 2010. The attack rate of outbreak was from 1.1% to 6.0%. The disease peak occurred in December 2009, after which the outbreak subsided gradually. The last case was confirmed in April 2010.

Conclusion

The main population struck by the H1N1-2009 virus was young adults, youths and children. The outbreaks most frequently occurred in schools, and most cases were acquired locally

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