First confinement decreed in France during the Covid-19 pandemic, the strictest, had the strongest impact by reducing the transmission of the virus by 84%. A curfew at 6 p.m.

was found to be more effective than at 8 p.M. (reduction of 68% compared to 48%), also notes the study. Although school closures had a more limited effect, they nevertheless reduced viral transmission by 15%. And confinement in France a week earlier would have avoided 20,000 deaths, according to these simulations.