Dr Jeff Eaton is a senior lecturer in HIV epidemiology within the Department of Infectious Disease Epidemiology at Imperial College. His research involves using mathematical models and statistical analysis to understand HIV epidemics in southern Africa and the potential impacts of HIV prevention strategies. His main research interests include understanding the epidemiological impacts of antiretroviral therapy on HIV epidemics in sub-Saharan Africa, improving methods and surveillance data for estimates of HIV trends, developing and validating mathematical models used to inform HIV policy decisions in generalized epidemic settings, HIV in children and adolescents in southern Africa, and data collection, analysis, and modelling of general-population HIV cohort studies. He holds a PhD in Infectious Disease Epidemiology from Imperial College London, and Master’s degree in Statistics from the University of Washington. He has worked at demographic surveillance sites: the Agincourt Health and Population Unit in rural north-eastern South Africa and the Mekong Integrated Population Registration Areas of Cambodia (MIPRAoC). He collaborates extensively with the Manicaland HIV/STD Projection, a population-based HIV cohort in eastern Zimbabwe, and contributes to the UNAIDS Reference Group on Estimates, Modelling, and Projections and the Economics and Modelling working group of the HPTN 071 (PopART) community randomised trial of a combined HIV prevention package including test-and-treat.