1. Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine , Blantyre , Malawi
2. Bristol Children’s Vaccine Centre, Schools of Cellular & Molecular Medicine and of Population Health Sciences, University of Bristol , Bristol , United Kingdom
3. Department of Clinical Sciences, Liverpool School of Tropical Medicine , Liverpool , United Kingdom
4. Institute of Immunology and Immunotherapy, University of Birmingham, Cancer Sciences Building, Edgbaston, Birmingham B15 2TT , United Kingdom
5. Center for Inflammation Research, Queens Research Institute, University of Edinburgh , Edinburgh , United Kingdom
6. Division of Infection and Immunity, University College London , London , United Kingdom
7. Institute of Immunology and Immunotherapy, University of Birmingham , Cancer Sciences Building, Edgbaston, Birmingham B15 2TT , United Kingdom
8. Nuffield Department of Medicine, University of Oxford , Oxford , United Kingdom