1. Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney, NSW.
2. Division of Microbiology and Infectious Diseases, PathWest Laboratory Medicine WA, Perth, WA.
3. Victorian Infectious Diseases Reference Laboratory, Melbourne Health, North West Health Care, Melbourne, VIC.
4. WHO Collaborating Centre for Reference and Research on Influenza, Melbourne, VIC.