1 Center for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi 30197-00100, Kenya; Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, UK; Paul Allen School for Global Health, Washington State University, Pullman, WA, USA. Electronic address: thumbi.mwangi@wsu.edu.
2 Health Services Unit, KEMRI-Wellcome Trust Research Program, Nairobi, Kenya.
3 Modelling and Simulation Hub, Department of Statistical Sciences, University of Cape Town, Cape Town, South Africa; Centre for Tropical Medicine and Global Health, University of Oxford, Oxford, UK.