1. World Health Organization (WHO) Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, and Doherty Department, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
2. Influenza Division, Centers for Disease Control and Prevention, Atlanta, United States
3. National Influenza Centre, Institute of Environmental Science and Research, Wellington, New Zealand
4. Programa Nacional de Inmunizaciones, Ministerio de Salud, Santiago, Chile
5. Sección de Virus Respiratorios y Exantematicos, Instituto de Salud Publica de Chile, Santiago, Chile
6. Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
7. Department of Infectious Diseases, Alfred Health, and Central Clinical School, Monash University, Melbourne, Australia
8. School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
9. Discipline of General Practice, University of Adelaide, Adelaide, Australia
10. National Institute for Communicable Diseases, Johannesburg, South Africa
11. WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, at the Peter Doherty Institute for Reference and Research on Influenza, Melbourne, Australia
12. Pan American Health Organization(PAHO)/WHO Regional Office for the Americas, Washington, United States
13. Subdepartamento de Enfermedades Virales, Instituto de Salud Publica de Chile, Santiago, Chile
14. Health Intelligence Team, Institute of Environmental Science and Research, Wellington, New Zealand
15. Departamento de Epidemiologia, Ministerio de Salud, Santiago, Chile
16. MassGenics, Duluth, United States
17. Influenza Program, Centers for Disease Control and Prevention, Pretoria, South Africa