Funding for this research was provided by:
South African Medical Research Council (MRC-RFA-UFSP-01–2013/UKZN HIVEPI)
National Institutes of Health (R01HD084233, R01AI124389)
Academy of Medical Sciences (NA150161)
Received: 15 August 2018
Accepted: 29 January 2019
First Online: 14 February 2019
Ethics approval and consent to participate
: The Biomedical Research Ethics Committee of the University of KwaZulu-Natal (BREC) Durban, South Africa gave full ethics approval for collection, linkage and use of the surveillance data used, reference number BE283/17. Administrative permissions for access to licensed raw data were granted by the AHRI Research Data Management team.
: No identifiable individual participant data (names or other personal identifiers) are contained in this manuscript.
: The authors declare that they have no competing interests.
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