[1
]
WHO Collaborating Centre for Reference and Research on Influenza, Peter Doherty Institute
for Infection and Immunity, Melbourne, VIC, Australia. sheena.sullivan@influenzacentre.org.
[2
]
Discipline of General Practice, University of Adelaide, Adelaide, SA, Australia.
[3
]
Microbiology and Infectious Diseases, SA Pathology, Adelaide, SA, Australia.
[4
]
Department of Epidemiology and Preventive Medicine, Monash University, Melbourne,
VIC, Australia.