1. Netherlands Institute for Health Services Research (NIVEL) Utrecht The Netherlands
2. Institute of Environmental Science and Research Wellington New Zealand
3. Istanbul University Istanbul Turkey
4. Instituto Nacional de Enfermedades Respiratorias Dr. Emilio Coni Santa Fe Argentina
5. Department of Health and Ageing Influenza Surveillance Section Surveillance Branch Office of Health Protection Woden ACT Australia
6. Public Health Laboratory Department of Public Health Ministry of Health Thimphu Bhutan
7. Ministry of Health Brasília DF Brazil
8. Service de Virologie Centre Pasteur du Cameroun Yaounde Cameroon
9. Sección de Virus Respiratorios y Exantemáticos Instituto de Salud Pública de Chile Santiago de Chile Chile
10. Division of Infectious Disease Key Laboratory of Surveillance and Early‐warning on Infectious Disease Chinese Center for Disease Control and Prevention Beijing China
11. Respiratory Virus Unit Public Health England Colindale UK
12. US Centers for Disease Control Central American Region Guatemala City Guatemala
13. US Naval Medical Research Unit No. 2 Jakarta Indonesia
14. National Influenza Center Istituto Superiore Sanità Rome Italy
15. Respiratory Viruses Unit Pasteur Institute of Côte d'Ivoire Abidjan Côte d'Ivoire
16. US Centers for Disease Control and Prevention Nairobi Kenya
17. National Influenza Center Virology Unit Institut Pasteur of Madagascar Antananarivo Madagascar
18. Epidemiology and Disease Control Division Ministry of Health Singapore Singapore
19. Global Disease Detection US‐CDC Pretoria South Africa
20. Zoonoses Research Unit Department of Medical Virology University of Pretoria Pretoria South Africa
21. L.V.Gromashevsky Institute of Epidemiology and Infectious Diseases National Academy of Medical Science of Ukraine Kiev Ukraine
22. Epidemiology and Prevention Branch Influenza Division Centers for Disease Control and Prevention Atlanta GA USA
23. National Institute of Hygiene and Epidemiology Hanoi Vietnam
24. University of Pennsylvania Philadelphia PA USA