Keabetswe Kodi | South African Field Epidemiology Training Program, National Institute for Communicable Disease a division of the National Health Laboratory Service, Sandringham, Johannesburg | KeabetsweK@nicd.ac.za 
Kerrigan McCarthy | Centre for Vaccines and Immunology, National Institute for Communicable Diseases a division of the National Health Laboratory Service, Johannesburg, South Africa | KerriganM@nicd.ac.za 
Tumiso Malatji | University of Limpopo School of Medicine, Polokwane, South Africa | tumimalatji79@gmail.com
Tembeka Semenya | Limpopo Department of Health, Public Health Directorate, Polokwane, South Africa | tembekas@yahoo.com
Freda Ngobeni | 6Limpopo Department of Health, Public Health Directorate, Polokwane, South Africa | fredangobeni@yahoo.com
Comfort Mthombeni | Medicine Usage in South Africa (MUSA), North-West University, Potchefstroom, South Africa | mthombenitc@yahoo.com
Mosoma Mmatjatji | Limpopo Department of Health, Public Health Directorate, Polokwane, South Africa | tjatjimosoma@gmail.com
Unarine Makungo | Division of Public Health Surveillance and Response, National Institute for Communicable Disease a division of the National Health Laboratory Service, Johannesburg, South Africa | UnarineM@nicd.ac.za