Fig. 3: Difference between treated and control zip codes in inverse hyperbolic sine numbers of COVID-19 infection by 2-week periods.

a, Thanksgiving campaign (n = 6,773 zip codes). b, Christmas campaign (n = 6,716 zip codes). Estimation of the regression Eq. (2) for each fortnight. Each dot represents the differences in the inverse hyperbolic sine of COVID-19 cases between treated and control zip codes for the given 2-week period. The whiskers are the 95% CIs. The red dot denotes the period that is directly affected by each campaign.