1. University of Edinburgh Edinburgh UK
2. World Health Organization Geneva Switzerland
3. Peter Doherty Institute for Infection and Immunity WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Disease Reference Laboratory (VIDRL) Melbourne Victoria Australia
4. Department of Microbiology and Immunology University of Melbourne Melbourne Victoria Australia
5. United Kingdom Health Security Agency (UKHSA) London UK
6. United Kingdom National External Quality Assessment Service (UK NEQAS) for Microbiology London UK
7. Centre for Respiratory Diseases and Meningitis National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service Johannesburg South Africa
8. School of Pathology, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
9. Respiratory Virus Branch, Division of Viral Diseases Centers for Disease Control and Prevention Atlanta Georgia USA
10. Division of Infectious Diseases, Department of Internal Medicine University of Texas Medical Branch Galveston Texas USA
11. Institute for Human Infections and Immunity University of Texas Medical Branch Galveston Texas USA
12. Virology Laboratory Ricardo Gutiérrez Children's Hospital Buenos Aires Argentina
13. National Council for Scientific and Technological Research (CONICET) Buenos Aires Argentina