Received: 26 February 2020
Accepted: 27 October 2020
First Online: 10 November 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the University of the Witwatersrand Human Research Committee (Protocol number M10464). Samples used in the study were bacterial isolates. No patient specimens were used. Therefore, informed consent was not required.
: Not applicable.
: The authors declare that there are no conflicts of interest.