1. The Ritchie Centre, Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
2. Monash Infectious Diseases, Monash Health, Clayton, Victoria, Australia
3. Department of Infectious Diseases, Alfred Health, Prahran, Victoria, Australia
4. Department of Epidemiology and Preventive Medicine, Monash University, The Alfred Centre, Melbourne, Victoria, Australia
5. Safer Care Victoria, Victorian Department of Health and Human Services, Melbourne, Victoria, Australia
6. Infection and Immunity, Monash Children's Hospital, Clayton, Victoria, Australia
7. Monash Centre for Health Research and Implementation, Department of Epidemiology and Preventive Medicine, Monash University, Clayton, Victoria, Australia