1. Australian Paediatric Surveillance Unit. The Children’s Hospital at Westmead, NSW 2145, Australia
2. Australian Paediatric Surveillance Unit; Clinical School, Children’s Hospital at Westmead, The University of Sydney
3. Australian Paediatric Surveillance Unit
4. The Kirby Institute, UNSW Sydney
5. VCS Population Health, VCS Foundation
6. The Canterbury Hospital; Faculty of Medicine and Health, Central Clinical School, The University of Sydney
7. Serology and OTDS Laboratories, NSW Health Pathology
8. Faculty of Medicine and Health, The University of Sydney
9. VIDRL, The Peter Doherty Institute for Infection and Immunity
10. University of Sydney; Sydney Children’s Hospitals Network Westmead; Australian Paediatric Surveillance Unit