Ethical approval
The ethics approval of this study was granted by the Health Research Ethics Committee (HREC) at Stellenbosch University (Ref no. S19/10/227). Additionally, since the study has drawn on data collected in the context of the HPTN 071 (PopART) trial, permission to use data for the purpose of this research project was granted by the principal investigators of the larger trial. All participants provided written informed consent and consent was repeatedly confirmed during data collection process. No risks or harm took place on participants during data collection. I anonymised any data presented publicly by removing all identifiers of participants (and families) and assigned them with codes and/or pseudonyms.