Fig. 4
From: Time trends in social contacts before and during the COVID-19 pandemic: the CONNECT study
Time trends in social contacts matrices. Pre-COVID: February 1st 2018 to March 17th 2019; Spring 2020: April 21st to May 25th 2020; Summer 2020: July 3rd to August 31st 2020; Fall 2020: October 1st to December 16th 2020; Holidays 2020–2021: December 17th 2020 to January 8th 2021. 1st wave: Spring 2020; 2nd wave: September 2020 to February 2021. The matrices of contacts at home include contacts with household members and visitors. The matrices of contacts in other locations include contacts at work, school, transport, leisure, and other locations