Writer and medical historian Conrad Keating talks to Dr. Brian Angus, Director of the Wellcome Trust UK Centre for Clinical Tropical Medicine in Oxford, about his interest in science and how this inspired him to work with infectious diseases in Africa. Dr Brian Angus originally worked with Professor Nick White in Thailand and joined the Nuffield Department of Clinical Medicine in 1993. In this wide-ranging discussion with the writer and medical historian Conrad Keating, Brian talks about his work with medical students, how he contracted Dengue fever in Thailand, and why scientific research on tropical diseases in developing countries benefits the people of Britain.