Physical-distancing measures, also known as social distancing, in the wake of COVID-19 outbreaks were well underway before states began stay-at-home mandates, and consequently a substantial decline in mobility was a strong private-sector response to new information about the risk of infections.

Those were among the key points made last month by Sumedha Gupta, an associate professor of economics in the School of Liberal Arts at IUPUI, speaking at a special-edition Brookings Institution webinar.

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