1 School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia; Infection Prevention and Control Prince of Wales Hospital, Randwick, NSW, Australia.
2 Infectious Diseases, Prince of Wales Hospital, Randwick, NSW, Australia.
3 School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia. Electronic address: m.mclaws@unsw.edu.au.