1. Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia
2. School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria 3010, Australia
3. Sydney School of Public Health, Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia
4. The Westmead Institute for Medical Research, Centre for Virus Research, Sydney, New South Wales 2145, Australia