University of St. Andrews and ESRC Centre for Population Change, University of St Andrews, Catholic University of Health & Allied Sciences, Makerere University, Kenya Medical Research Institute (KEMRI), University of St Andrews, University of St Andrews, Makerere University, Catholic University of Health & Allied Sciences, Catholic University of Health & Allied Sciences, University of St Andrews, University of St Andrews, University of St Andrews, University of Durham, University of Cambridge, University of St Andrews, St. Andrews University - Division of Infection and Global Health Research, University of St. Andrews - Division of Infection and Global Health, Mbarara University of Science and Technology, University of St Andrews, Kilimanjaro Christian Medical University College - Kilimanjaro Clinical Research Institute, African Research Excellence Fund, Harvard University - Harvard Medical School, University of St Andrews, University of St Andrews, University of St Andrews and University of St Andrews