1. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom;
2. Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu–Natal, Durban, South Africa;
3. eThekwini Municipality Health Unit, Durban, South Africa;
4. KwaZulu-Natal Research and Innovation Sequencing Platform (KRISP), University of KwaZulu-Natal, Durban, South Africa;
5. Department of Virology, University of KwaZulu-Natal and National Health Laboratory Service, Inkosi Albert Luthuli Central Hospital, KwaZulu-Natal, South Africa;
6. Department of Global Health, Schools of Medicine and Public Health, University of Washington, Seattle, WA;
7. Department of Medicine, School of Medicine, University of Washington, Seattle, WA;
8. Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA; and
9. Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa.