1. Vaccinology and Immunology Research Trials Unit, Women’s and Children’s Health Network, Adelaide, South Australia, Australia
2. Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
3. Central Adelaide Local Health Network, South Australia Health, Adelaide, South Australia, Australia
4. Adelaide Medical School, University of Adelaide, Adelaide, South Australia, Australia
5. SAHMRI Women and Kids, South Australian Health and Medical Research Institute, Adelaide, South Australia,Australia
6. School of Public Health, University of Adelaide, Adelaide, South Australia, Australia
7. Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
8. National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australian Capital Territory, Australia
9. Immunisation Department, Public Health England, London, United Kingdom