1 Africa Health Research Institute, KwaZulu-Natal, South Africa.
2 Division of Infection and Immunity, University College London, London, UK.
3 School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa.
4 London School of Hygiene & Tropical Medicine, London, UK.
5 School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa.
6 School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa.
7 DSI-MRC South African Population Research Infrastructure Network, South African Medical Research Council, Durban, South Africa.
8 HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
9 Ragon Institute of MGH, MIT, and Harvard, Harvard Medical School, Cambridge, MA, USA.
10 Max Planck Institute for Infection Biology, Berlin, Germany.
11 Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA.
12 Department of Medicine, Harvard Medical School, Boston, MA, USA.
13 Division of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.