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1 WHO Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria.
2 Communicable Disease Control Branch, SA Department for Health and Ageing, Adelaide, South Australia.
3 Communicable Disease Epidemiology and Surveillance, Health Protection Branch, Regulation, Health Protection and Emergency Management Division, Department of Health and Human Services, Melbourne, Victoria.
4 Vaccine Preventable Diseases Surveillance Section, Health Protection Policy Branch, Office of Health Protection, Department of Health, Canberra, Australian Capital Territory.
1 WHO Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria.
2 Communicable Disease Control Branch, SA Department for Health and Ageing, Adelaide, South Australia.
3 Communicable Disease Epidemiology and Surveillance, Health Protection Branch, Regulation, Health Protection and Emergency Management Division, Department of Health and Human Services, Melbourne, Victoria.
4 Vaccine Preventable Diseases Surveillance Section, Health Protection Policy Branch, Office of Health Protection, Department of Health, Canberra, Australian Capital Territory.