Africa Health Research Institute, London School of Hygiene & Tropical Medicine - Faculty of Epidemiology and Population Health, South African Medical Research Council, Africa Health Research Institute, Africa Health Research Institute, Africa Health Research Institute, University of Sussex, University of New South Wales (UNSW) - The Kirby Institute for Infection and Immunity in Society, University of Cape Town (UCT) - South African Tuberculosis Vaccine Initiative, Africa Health Research Institute and University of Sussex