Backer, Jantien AMollema, LiesbethVos, Eric RaKlinkenberg, Donvan der Klis, Fiona Rmde Melker, Hester Evan den Hof, SusanWallinga, Jacco2021-03-082021-03-083363237410.2807/1560-7917.ES.2021.26.8.2000994http://hdl.handle.net/10029/624760enCOVID-19SARS-CoV2contact surveycoronavirusmixing patternsphysical distancingImpact of physical distancing measures against COVID-19 on contacts and mixing patterns: repeated cross-sectional surveys, the Netherlands, 2016-17, April 2020 and June 2020.Article1560-7917Euro Surveill 2021; 26(8): pii.2000994