tetano
Editor, Senior Moderator
Emerg Infect Dis. 2010 Apr;16(4):725-6.
Dual seasonal patterns for influenza, china.
Shu YL, Fang LQ, de Vlas SJ, Gao Y, Richardus JH, Cao WC.
Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China (Y.L. Shu, Y. Gao); Beijing Institute of Microbiology and Epidemiology, Beijing (L.-Q. Fang); University Medical Center Rotterdam, Rotterdam, the Netherlands (S.J. de Vlas, J.H. Richardus); and State Key Laboratory of Pathogen and Biosecurity, Beijing (W.-C. Cao).
To the Editor: Since 2000, the People's Republic of China has had a nationwide surveillance network for influenza, which as of 2005 has been reported on the Chinese Center for Disease Control and Prevention website (www.cnic.org.cn/ch). This surveillance has shown a remarkable dual pattern of seasonal influenza on mainland China. Whereas a regular winter pattern is noted for northern China (similar to that in most parts of the Northern Hemisphere), the pattern in southern China differs. In southern China, influenza is prevalent throughout the year; it has a clear peak in the summer and a less pronounced peak in the winter. Because this dual seasonal pattern of influenza has not been reported outside China and is relevant to pandemic (H1N1) 2009, we describe surveillance data for rates of consultation for influenza-like illness (ILI) and influenza subtypes in patients with ILI. We emphasize the spread of influenza from southern to northern China.
PMID: 20350403 [PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/20350403
Dual seasonal patterns for influenza, china.
Shu YL, Fang LQ, de Vlas SJ, Gao Y, Richardus JH, Cao WC.
Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China (Y.L. Shu, Y. Gao); Beijing Institute of Microbiology and Epidemiology, Beijing (L.-Q. Fang); University Medical Center Rotterdam, Rotterdam, the Netherlands (S.J. de Vlas, J.H. Richardus); and State Key Laboratory of Pathogen and Biosecurity, Beijing (W.-C. Cao).
To the Editor: Since 2000, the People's Republic of China has had a nationwide surveillance network for influenza, which as of 2005 has been reported on the Chinese Center for Disease Control and Prevention website (www.cnic.org.cn/ch). This surveillance has shown a remarkable dual pattern of seasonal influenza on mainland China. Whereas a regular winter pattern is noted for northern China (similar to that in most parts of the Northern Hemisphere), the pattern in southern China differs. In southern China, influenza is prevalent throughout the year; it has a clear peak in the summer and a less pronounced peak in the winter. Because this dual seasonal pattern of influenza has not been reported outside China and is relevant to pandemic (H1N1) 2009, we describe surveillance data for rates of consultation for influenza-like illness (ILI) and influenza subtypes in patients with ILI. We emphasize the spread of influenza from southern to northern China.
PMID: 20350403 [PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/20350403