1. Division of Medical Microbiology, Department of Clinical Laboratory Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
2. Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa
3. Red Cross War Memorial Children's Hospital, Cape Town, South Africa
4. Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
5. National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa