University of Oxford - Centre for Clinical Vaccinology and Tropical Medicine, University of Sciences, Technique and Technologies of Bamako (USTTB) - Malaria Research and Training Centre, Institute de Recherche en Sciences de Santé (IRSS) - Clinical Research Unit of Nanoro, Institut des Sciences et Techniques (INSTech), Kenya Medical Research Institute (KEMRI) - Centre for Geographical Medicine Research -Coast (KEMRI-CGMRC), Ifakara Health Institute, London School of Hygiene & Tropical Medicine, University of Oxford - Centre for Clinical Vaccinology and Tropical Medicine, Institute de Recherche en Sciences de Santé (IRSS) - Clinical Research Unit of Nanoro, University of Oxford - Centre for Clinical Vaccinology and Tropical Medicine, Ifakara Health Institute, West African Network for Clinical Trials of Antimalarial Drugs (WANECAM), University of Sciences, Technique and Technologies of Bamako (USTTB) - Malaria Research and Training Centre, Institute de Recherche en Sciences de Santé (IRSS) - Clinical Research Unit of Nanoro, University of Oxford - KEMRI-Coast Centre for Geographical Medicine and Research, University of Oxford - Centre for Clinical Vaccinology and Tropical Medicine, Kenya Medical Research Institute (KEMRI) - Kemri-Wellcome Trust Research Programme, London School of Hygiene & Tropical Medicine, University of Oxford - Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford - Nuffield Department of Medicine, University of Oxford - The Jenner Institute, London School of Hygiene & Tropical Medicine, GSK plc, London School of Hygiene & Tropical Medicine, Serum Institute of India Private Ltd, Serum Institute of India Private Ltd, Serum Institute of India Private Ltd and University of Oxford - The Jenner Institute