Bob is the longest serving Oxford scientist at the Kenyan Programme. Bob’s career began in The Gambia where he undertook the first clinical trials of insecticide treated nets (ITN) [1984-1988]. Following a move to Kenya, he established the framework to undertake linked community-based mortality and hospital admission trials at Kilifi and directed one of four large-scale, community-randomized mortality trials of ITN in Africa [1989-1993]. Subsequently he investigated the possible long-term effects of reduced parasite exposure on the clinical epidemiology of malaria to understand the consequences of sustained ITN use and/or its interrupted use on disease burdens [1994-2003]. This was used as a basis to establish new epidemiological methods to define the mortality, morbidity and consequential burdens posed by malaria in Africa [1995-1999] and clinical disease globally [2005]. As part of new ways to articulate disease burdens he started the Mapping Malaria Risk in Africa (MARA) project with colleagues in South Africa [1996], which served as the model for a global initiative founded by Bob in Nairobi, known as the Malaria Atlas Project (MAP) [2005]. Bob has been supported by the Wellcome Trust since 1992 under three Senior and three Principal Fellowships in Basic Biomedical Science. https://www.tropicalmedicine.ox.ac.uk/news/115-years-of-malaria-in-africa-interview https://www.ndm.ox.ac.uk/bob-snow-malaria-control-in-africa