Fig. 14.

Effect of nationally mandating masks for employees on March 14th in the US. In the left column, the dots are the average change in growth in each state. The blue line is the average across states of the change in growth. The shaded region is a point-wise 90% confidence interval for the national average change in growth. The middle column shows the total national change in daily cases and deaths. Black dots are the changes in each state. The right column shows the change in cumulative cases or deaths relative to the baseline of actual policies.