Funding for this research was provided by:
Fogarty International Center (5D43TW009774-02)
National Institute of Allergy and Infectious Diseases (5D43TW009774-02)
University of North Carolina at Chapel Hill (5D43TW009774-02)
University of the Witwatersrand (5D43TW009774-02)
Received: 16 September 2020
Accepted: 13 November 2021
First Online: 11 December 2021
: Approval to conduct the study was gained from the Human Research Ethics Committee of the Health Sciences Faculty, University of the Witwatersrand.
: Written informed consent was obtained from the participants for publication of their individual details. The consent form is held by the authors and is available for review by the Editor-in-Chief.
: The authors declare that they have no competing interests.