We report that during the loosening of stay-at-home mandates, U.S. counties with more county level workplace cell phone activity had a more rapid increase in incidence of COVID-19. Though these results are not applicable at an individual level, they improve estimation of areas at higher risk of COVID-19 surge.
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【저자키워드】 lockdown, Spread, Mobility, network, digital technology,
【저자키워드】 lockdown, Spread, Mobility, network, digital technology,