1. MRC Clinical Trials Unit at UCL; University College London; London UK
2. Centre for Infectious Disease Surveillance and Control (CIDSC); Public Health England; London UK
3. Mortimer Market Centre; University College London Hospitals NHS Trust; London UK
4. Chelsea & Westminster Hospital; London UK
5. Brighton and Sussex University Hospitals NHS Trust; Brighton UK
6. University of Liverpool; Liverpool UK
7. Division of Infection and Immunity; University College London; London UK
8. Africa Centre for Health and Population Studies; University of KwaZulu-Natal; Mtubatuba South Africa
9. Research Department of Infection and Population Health; University College London; London UK
10. University of Edinburgh; Edinburgh UK
11. Public Health England; Birmingham Heartlands Hospital; Birmingham UK