1. Department of Infectious Disease, Division of Medicine Imperial College London UK
2. Kilifi County Hospital and Kenya Medical Research Institute (KEMRI)‐Wellcome Trust Research Programme Kilifi Kenya
3. Ugandan Blood Transfusion Service Kampala Uganda
4. Busitema University Faculty of Health Sciences Mbale Campus and Mbale Regional Referral Hospital Mbale Uganda
5. Department of Paediatrics Mbale Clinical Research Institute Mbale Uganda
6. Institute of Global Health and Innovation, Division of Medicine Imperial College London UK