Lockdown impact on age-specific contact patterns and behaviours, France, April 2020 Bosetti, Paolo and Huynh, Bich-Tram and Abdou, Armiya Youssouf and Sanchez, Marie and Eisenhauer, Catherine and Courtejoie, Noémie and Accardo, Jérôme and Salje, Henrik and Guillemot, Didier and Moslonka-Lefebvre, Mathieu and Boëlle, Pierre-Yves and Béraud, Guillaume and Cauchemez, Simon and Opatowski, Lulla, Eurosurveillance, 26, 2001636 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.48.2001636