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, The University of Adelaide, Adelaide, South Australia, Australia
3. SA Health, South Australia, Australia
4. Immunisation Division, UK Health Security Agency, London, UK; Paediatric Infectious Diseases Research Group, St George’s University of London, London, United Kingdom.