In this episode we explore the crucial stages of clinical trials and testing vaccines. How do clinical trials account for different demographics? How do we know vaccines are safe for everyone? We are joined by Dr Ed Parker, Research Fellow at the London School of Hygiene & Tropical Medicine and member of the Vaccine Centre. Ed walks us through the purpose of a clinical trial and its roots in ancient history, and provides insight behind LSHTM’s vaccine tracker. Link to LSHTM short course on clinical trials: https://www.lshtm.ac.uk/study/courses/short-courses/clinical-trials