1. World Health Organization (WHO) Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity, Melbourne VIC , Australia
2. National Centre for Epidemiology and Public Health, Australian National University , Canberra Australian Capital Territory (ACT) , Australia
3. WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, and Department of Infectious Disease, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity , Melbourne Victoria (VIC) , Australia
4. WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity , Melbourne VIC , Australia
5. National Centre for Epidemiology and Public Health, Australian National University , Canberra ACT , Australia
6. Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, at the Peter Doherty Institute for Infection and Immunity , Melbourne VIC , Australia
7. WHO Collaborating Centre for Reference and Research on Influenza, Royal Melbourne Hospital, and Department of Microbiology and Immunology, University of Melbourne, and Department of Infectious Diseases, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity , Melbourne VIC , Australia