1 Discipline of Nursing, Avondale College of Higher Education, Wahoonga, NSW, 2076, Australia. Electronic address: Brett.Mitchell@avondale.edu.au.
2 Infection Prevention and Control, Sydney Nursing School, Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Western Sydney Local Health District, Westmead Institute for Medical Research, 179 Hawkesbury Road, Westmead, NSW 2145, Australia.