Rebecca C. Robey
GKT School of Medicine, Kings College London, London, UK
Simon B. Drysdale, Dominic F. Kelly
Department of Paediatrics, University of Oxford, & NIHR Biomedical Research Centre, Oxford, UK
Department of Paediatrics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
Ian CJW. Bowler
Department of Microbiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
Manish Sadarangani ⁎ 
Department of Paediatrics, University of Oxford, & NIHR Biomedical Research Centre, Oxford, UK
Department of Paediatrics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
Vaccine Evaluation Center, BC Children's Hospital Research Institute, University of British Columbia, Vancouver BC, Canada