1 Australian Government Department of Health and Aged Care, Woden, Australian Capital Territory, Australia.
2 Department of Applied Epidemiology, National Centre for Epidemiology and Population Health, The Australian National University, Acton, Australian Capital Territory, Australia.
3 These authors are equal contributors to this work and are designated as co-first authors for this article.
4 Health Protection Services, ACT Health, Holder, Australian Capital Territory, Australia.