Yue-Long Shu1, Li-Qun Fang1, Sake J. de Vlas, Yan Gao, Jan Hendrik Richardus, and Wu-Chun Cao1
Author affiliations: 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); State Key Laboratory of Pathogen and Biosecurity, Beijing (W.-C. Cao); 1These authors contributed equally to this article.
Figure. Epidemic patterns, by month, from the surveillance data of the influenza-like illness (ILI) consulting rate and influenza subtypes in ILI patients in mainland China, per month, April 2006–March 2009. A) ILI percentages for northern (dashed lines) and southern (solid lines) mainland China, by age group. B) Average temperature and relative humidity.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.