Additional file 1 of Longitudinal social contacts among school-aged children during the COVID-19 pandemic: the Bay Area Contacts among Kids (BACK) study

Additional file 1: File S1. Survey questionnaire. File S2. Supplemental Analysis: R0 estimation from contact surveys. Table S1. COVID-19 vaccine enthusiasm among unvaccinated households. Table S2. Characteristics of children attending school across Wave 2 and Wave 3. Table S3. Model based estimates of non-household contacts. Figure S1. Age-structured social contact rates during the first, second and third wave of data collection. Figure S2. Histogram of total contacts by study wave. Figure S3. Average number of non-household contacts stratified by location of contact, age category, and study wave. Figure S4. Age-structured contact matrices stratified by household characteristic and study wave. Figure S5. Age-structured contact matrices populated with bootstrapped confidence intervals. Figure S6. R0 estimation from contact data.