1. South African National Blood Service Roodepoort South Africa
2. Lelie Research Alkmaar The Netherlands
3. Blood Systems Research Institute San Francisco California
4. Division of Medical VirologyFaculty of Medicine and Health Sciences, Stellenbosch University Parow South Africa
5. National Health Laboratory Service, Tygerberg Business Unit Parow South Africa
6. DST‐NRF Centre of Excellence in Epidemiological Modelling and Analysis (SACEMA)Stellenbosch University Stellenbosch South Africa