Aurum Institute, South African Medical Research Council - Biostatistics Research Unit, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Chris Hani Baragwanath Academic Hospital - Perinatal HIV Research Unit, Aurum Institute, The Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, Aurum Institute, National Health Laboratory Services (NHLS) - National Institute for Communicable Diseases, University of the Witwatersrand, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, Translational Health Science and Technology Institute, Translational Health Science and Technology Institute, Translational Health Science and Technology Institute, Aurum Institute, South African Medical Research Council, South African Medical Research Council, Aurum Institute, Aurum Institute, Aurum Institute and Independent

University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Red Cross War Memorial Children’s Hospital, University of Cape Town (UCT) - Groote Schuur Hospital, University of Cape Town (UCT) - Groote Schuur Hospital, University of Cape Town (UCT) - Groote Schuur Hospital, University of Cape Town (UCT) - Groote Schuur Hospital, University of Cape Town (UCT) - Red Cross War Memorial Children’s Hospital, University of Cape Town (UCT) - Red Cross War Memorial Children’s Hospital, University of Cape Town (UCT) - Department of Paediatric Rheumatology, University of Cape Town (UCT) - Red Cross War Memorial Children’s Hospital, National Health Laboratory Services (NHLS) - National Institute for Communicable Diseases, National Health Laboratory Services (NHLS) - National Institute for Communicable Diseases, National Health Laboratory Services (NHLS) - National Institute for Communicable Diseases, University of the Witwatersrand, University of Cape Town (UCT) - SA-MRC Unit on Child & Adolescent Health, University of Cape Town (UCT) - SA-MRC Unit on Child & Adolescent Health, University of Cape Town (UCT) - SA-MRC Unit on Child & Adolescent Health, University College London - Great Ormond Street Institute of Child Health Biomedical Research Centre, University College London - Great Ormond Street Institute of Child Health Biomedical Research Centre, University of Cape Town (UCT) - Department of Pediatrics and Child Health, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Groote Schuur Cardiac Clinic, University of Cape Town (UCT) - Department of Paediatric Rheumatology, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine, University of Cape Town (UCT) - Institute of Infectious Disease and Molecular Medicine and Independent