Simon Cauchemez joined Institut Pasteur in 2013 to head the Mathematical Modelling of Infectious Diseases Unit. The main research objective of his unit is to develop state-of-the-art statistical and mathematical methods to address these challenges, with the aim to increase the understanding of how pathogens spread in human populations as well as the impact of interventions, to support policy making and optimise control strategies. His approach is highly multidisciplinary, looking at infectious diseases through multiple perspectives (statistics, modelling, epidemiology, surveillance, Public Health, policy making, microbiology), multiple scales and multiple data streams. Before joining Institut Pasteur, Simon Cauchemez was working in the Department of Infectious Disease Epidemiology at Imperial College London.