Fig. 6.

Event Study Estimates for the Impact of Spring Break Travel on Google Symptom Search Intensity Prior to COVID-19 Notes: Each marker plots a coefficient estimate from the event study specification described in Eq. (2). Each outcome is a Google search intensity measure for either cough or fever at the county-day level. The sample includes counties with a single university in our sample plus all adjacent counties with no universities. Blue circles denote coefficient estimates from the specification in which all adjacent non-university counties are included along with single university counties with below median college student enrollment relative to the county population. Pink squares denote coefficient estimates from the specification in which all adjacent non-university counties are included along with single university counties with above median college student enrollment relative to the county population. Vertical bars represent the 95% confidence intervals derived using standard errors clustered at the county level.