1. Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK
2. Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
3. Department of Public Health, Environments and Society, London School of Hygiene & Tropical Medicine, London, UK
4. Office for National Statistics, Newport, UK
5. Department for Digital, Culture, Media & Sport, London, UK
6. UK Health Security Agency, London, UK
7. St George’s, University of London, London, UK