1. Biosecurity Program Kirby Institute University of New South Wales Sydney NSW Australia
2. College of Veterinary Medicine Sichuan Agricultural University Chengdu China
3. School of Public Health and Community Medicine University of New South Wales Sydney NSW Australia
4. WHO Collaborating Centre for Reference and Research on Influenza (VIDRL) Doherty Institute Melbourne Vic. Australia
5. Department of Microbiology and Immunology Doherty InstituteUniversity of Melbourne Melbourne Vic. Australia
6. School of Public Health and Preventive Medicine Monash University Melbourne Vic. Australia