1 Department of Infectious Disease and Tropical Medicine, Heidelberg University Hospital, Heidelberg, Germany.
2 Department of Infectious Diseases, North Bristol NHS Trust, Bristol, UK.
3 Department of Infectious Diseases, Imperial College London, London, UK.
4 German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany.
5 DSI-NRF South African Centre of Excellence in Epidemiological Modelling and Analysis (SACEMA), Faculty of Science, Stellenbosch University, Stellenbosch, South Africa.