Rachel Thomson1, Ellen Donnan2, Sean Unwin3,4. 1. 1 Greenslopes Private Hospital-Gallipoli Medical Research Centre, Brisbane, Queensland, Australia. 2. 2 Department of Health, Communicable Diseases Branch, Brisbane, Queensland, Australia. 3. 3 Infection Management Services, Metro South Health, Brisbane, Queensland, Australia; and. 4. 4 Pharmacy Department, Princess Alexandra Hospital, Brisbane, Queensland, Australia.