1. Oxford Vaccine Group, Department of Paediatrics, University of Oxford
2. National Institute for Health Research Oxford Biomedical Research Centre, Oxford
3. Nuffield Department of Primary Care Health Sciences, University of Oxford
4. Public Health England, London, United Kingdom
5. Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
6. Institute for Infection and Immunity, St George’s, University of London
7. BUGS Bioscience, London Bioscience Innovation Centre, United Kingdom