Tracking and analysing populations’ reactions to this unprecedented global pandemic is essential. But in order to understand their underlying foundations, it is crucial to be able to compare these reactions between multiple countries. This comparative study is precisely what the CEVIPOF has decided to undertake with “Attitudes Towards Covid 19”, a research project based on surveys conducted in more than 18 countries - from Canada to South Africa to France and New Zealand. On an unprecedented scale, this survey makes it possible to understand the reactions and behaviour of citizens towards political and institutional decisions in matters of health, the economy, or even civil liberties. So much data that has already proved invaluable in guiding public figures in their arguments and recommendations. Interview with Martial Foucault, Director of the CEVIPOF and co-coordinator of the study with Sylvain Brouard, research director.