1. Department of Infectious Disease Division of Medicine Institute of Global Health and InnovationImperial College London UK
2. Uganda Blood Transfusion Services (BTS)National BTS Kampala Uganda
3. Department of Paediatrics and Child Health School of MedicineMakerere University and Mulago Hospital KampalaUganda
4. Faculty of Health Sciences Busitema UniversityMbale Regional Referral Hospital Mbale Uganda
5. College of MedicineMalawi‐Liverpool‐Wellcome Research Programme Blantyre Malawi
6. Soroti Regional Referral Hospital Soroti Uganda
7. Kenya Medical Research Institute (KEMRI)/Wellcome Trust Research Programme Kilifi Kenya
8. Malawi BTS Blantyre Malawi
9. Liverpool School of Tropical Medicine Liverpool UK
10. Haematology & Transfusion Service Centre Hospitalier et Universitaire Yaounde Cameroon
11. Medical Research Council Clinical Trials Unit (MRC CTU), University College London London UK