About the Author(s)
Jeremy Nel ![symbol](http://aosis.co.za/resources/publishing/images/symbol.png)
Division of Infectious Diseases, Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
Prudence Ive ![symbol](http://aosis.co.za/resources/publishing/images/symbol.png)
Division of Infectious Diseases, Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
Carolina Nel ![symbol](http://aosis.co.za/resources/publishing/images/symbol.png)
Department of Anatomical Pathology, Faculty of Health Sciences, University of the Witwatersrand, National Health Laboratory Services, Johannesburg, South Africa
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