1Department of Social Policy and Intervention, University of Oxford, Oxford, UK
2Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
3Julius Global Health, University Medical Centre Utrecht, Utrecht, The Netherlands
4National Ribat University, Khartoum, Sudan
5Department of Primary Care & Public Health, Imperial College London, London, UK
6Sudan COVID-19 Research Group, Khartoum, Sudan
7University of Khartoum, Khartoum, Sudan
8Freelance Public Health Researcher, Sydney, Australia
9Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK