Pierre Nouvellet is a quantitative biologist and epidemiologist focused on data science and modeling. He uses mathematical formalisation to resolve concrete ecological and epidemiological problems. Specifically, he develops statistical methods to estimate parameters within complex ecological settings by integrating various sources of information in order to better understand the dynamics of diseases’ transmission and mitigate their public health risk. Currently he is focused on examining vector-borne and zoonotic diseases, emerging diseases, and rapid response to outbreaks. Pierre’s presentation “Reduction in mobility and Covid-19 transmission” focuses on his team’s research (https://spiral.imperial.ac.uk/handle/10044/1/85559) in which they examine mobility data in order to analyze the relationship between transmission and mobility for 52 countries around the world.