I am an epidemiologist with a research focus in low and middle income settings. My interests more broadly cover the fields of infectious diseases and child health and development. I have conducted evaluations to assess impacts of UKRI, Wellcome Trust, Gates Foundation, and World Bank funded public health programmes using observational or interventional methods to contribute to policy decisions for programme scale-up in Ghana, Mozambique, Uganda, The Gambia, India, Pakistan, and Burkina Faso. I organise an MSc module in Study Design, and am moderator for the MSc module Practical Epidemiology, both in the LSHTM Epidemiology distance learning programme. I am co-Deputy Director for the LSHTM Centre for Evaluation, a member of the UK government Evaluation and Trial Advice Panel, and I sit on the steering committee for the John Snow Society. I have a PhD from the University of Warwick in the immuno-epidemiology of visceral leishmaniasis and an MSc in Medical Parasitology from the LSHTM.