Eight-hospital based influenza like illness surveillance from April, 2009 to March, 2011 in China.

Influenza Other Respir Viruses

November 2013

Department of Epidemiology, Beijing Institute of Microbiology and Epidemiology, Beijing, ChinaTianjin Key Laboratory for Prevention and control of Occupational and Environmental Hazard, Department of Epidemiology, Logistic University of CPAPF, Tianjin, ChinaDepartment of Clinical Microbiology, The General Hospital of PLA, Beijing, ChinaCenter for Disease Prevention and Control of Jinan, Jinan, China.