1. Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing and
2. WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong Special Administrative Region, China;
3. Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia;
4. Guangdong Provincial Centre for Disease Control and Prevention, Guangzhou,
5. Hunan Provincial Centre for Disease Control and Prevention, Changsha,
6. Yunnan Provincial Centre for Disease Control and Prevention, Kunming,
7. Sichuan Provincial Centre for Disease Control and Prevention, Chengdu,
8. Anhui Provincial Centre for Disease Control and Prevention, Hefei,
9. Hubei Provincial Centre for Disease Control and Prevention, Wuhan,
10. Institut Pasteur of Shanghai, Chinese Academy of Sciences,
11. CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences and
12. Office of Director-General, Chinese Center for Disease Control and Prevention, Beijing, and
13. School of Public Health, Fudan University, Key Laboratory of Public Health Safety, Ministry of Education, Xuhui District, Shanghai, China