What Explains Temporal and Geographic Variation in the Early US Coronavirus Pandemic?

Hunt Allcott, Levi Boxell, Jacob C. Conway, Billy A. Ferguson, Matthew Gentzkow, Benny Goldman

NBER Working Paper No. 27965
Issued in October 2020, Revised in December 2020
NBER Program(s):Health Economics, Public Economics

We provide new evidence on the drivers of the early US coronavirus pandemic. We combine an epidemiological model of disease transmission with quasi-random variation arising from the timing of stay-at-home-orders to estimate the causal roles of policy interventions and voluntary social distancing. We then relate the residual variation in disease transmission rates to observable features of cities. We estimate significant impacts of policy and social distancing responses, but we show that the magnitude of policy effects is modest, and most social distancing is driven by voluntary responses. Moreover, we show that neither policy nor rates of voluntary social distancing explain a meaningful share of geographic variation. The most important predictors of which cities were hardest hit by the pandemic are exogenous characteristics such as population and density.

Acknowledgments and Disclosures

Machine-readable bibliographic record - MARC, RIS, BibTeX

Document Object Identifier (DOI): 10.3386/w27965