1. COVID-19 Epidemiology Cell, UK Health Security Agency, London, United Kingdom
2. Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
3. Paediatric Infectious Diseases and Immunology, Evelina London Children’s Hospital, London, United Kingdom
4. Clinical & Public Health, Young People Cell, UK Health Security Agency, London, United Kingdom
5. Surveillance Cell, UK Health Security Agency, London, United Kingdom