JUE Insight: Measuring movement and social contact with smartphone data: a real-time application to COVID-19.

Tracking human activity in real time and at fine spatial scale is particularly valuable during episodes such as the COVID-19 pandemic. In this paper, we discuss the suitability of smartphone data for quantifying movement and social contact. These data cover broad sections of the US population and exhibit pre-pandemic patterns similar to conventional survey data. We develop and make publicly available a location exposure index that summarizes county-to-county movements and a device exposure index that quantifies social contact within venues. We also investigate the reliability of smartphone movement data during the pandemic.

JUE Insight: Distributional Impacts of Retail Vaccine Availability.

We examine the potential for exploiting retailer location choice in targeting health interventions. Using geospatial data, we quantify proximity to vaccines created by a U.S. federal program distributing COVID-19 vaccines to commercial retail pharmacies. We assess the distributional impacts of a proposal to provide vaccines at Dollar General, a low-priced general merchandise retailer. Adding Dollar General to the federal program would substantially decrease the distance to vaccine sites for low-income, rural, and minority U.S. households, groups for which COVID-19 vaccine take-up has been disproportionately slow.

Measuring Movement and Social Contact with Smartphone Data: A Real-Time Application to COVID-19

Tracking human activity in real time and at fine spatial scale is particularly valuable during episodes such as the COVID-19 pandemic. In this paper, we discuss the suitability of smartphone data for quantifying movement and social contact. We show that these data cover broad sections of the US population and exhibit movement patterns similar to conventional survey data. We develop and make publicly available a location exposure index that summarizes county-to-county movements and a device exposure index that quantifies social contact within venues. We use these indices to document how pandemic-induced reductions in activity vary across people and places.

Distributional Impacts of Retail Vaccine Availability

As countries transition from facing COVID-19 vaccine supply shortfalls to requiring novel strategies to facilitate vaccination, modern retail chains—often designed and located to target particular demographic groups—are a potential vaccine delivery vehicle. Using geospatial data, we quantify the proximity to vaccines created by a U.S. federal program that distributes vaccines to commercial retail pharmacies. We then quantify the impact of a proposal to provide vaccines at Dollar General, a low-priced general merchandise retailer. We show that adding Dollar General to the federal program would substantially decrease the distance to vaccine sites for low-income and minority U.S. households.