Changing social contact patterns among US workers during the COVID-19 pandemic: April 2020 to December 2021

These are data from the CorporateMix US study rounds 1-4. Below is a description of the files: 1. participants: this contains a list of all the study participants for each round. EaA unique participant identified by the participant_id and round. 2. contacts: this contains the individuals with whom a participant had a contact. 3.df_all: this is generated by merging the participant and contacts dataframes using the participant_id and round as primary keys. 4. day_rd1: this is data for round 1 day of survey. The survey design for round 1 was different, so these data are important to distinguish between day 1 and day 2 contacts.