1. NSW Health, Sydney, NSW
2. National Centre for Epidemiology and Population Health, Australian National University, Canberra, ACT
3. NSW Food Authority, Sydney, NSW
4. Centre for Infectious Diseases, Westmead Hospital, Sydney, NSW
5. Victorian Infectious Diseases Reference Laboratory, Melbourne, VIC
6. Public Health Unit, South Eastern Sydney Local Health District, Sydney, NSW
7. University of New South Wales, Sydney, NSW