Fig. 2

Illustrative Paths of Mobility indicator in Counties with Less Extensive and More Extensive Declines During the Two-Week Interval Between December 20, 2021, and January 3, 2022. The panel on the left, identified as \({X}_{i}\) = 0, shows the paths of 14 randomly selected counties with an absolute decline of less than 31.85. The panel of the right, identified as \({X}_{i}\) = 1, shows the paths of another 14 randomly selected counties with an absolute decline more than 31.85. In both panels, the paths of the calculated mobility indicators during the interval from 12/20/21–1/3/22 have been highlighted. For the less-extensive-decline (\({X}_{i}\) = 0) counties on the left, nearly all the calculated decline in mobility occurred during the first week, that is, during 12/20–12/27/21. For the more-extensive-decline (\({X}_{i}\) = 1) counties on the right, the calculated mobility indicators continued to decline during the second week, that is, during 12/27/21–1/3/22