1 Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa. Electronic address: hanif.esmail@ndcls.ox.ac.uk.
2 School of Health and Related Research, University of Sheffield, Sheffield, UK.
3 TB Modelling Group, TB Centre and Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, UK; Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, UK.