New Population Center Working Paper (PSC/PARC): Ciancio, Alberto, Fabrice Kämpfen, Iliana Kohler, Daniel Bennett, Wändi Bruine de Bruin, Jill Darling, Arie Kapteyn, Jürgen Maurer, and Hans-Peter Kohler. 2020. "Know Your Epidemic, Know Your Response: COVID-19 in the United States." University of Pennsylvania Population Center Working Paper (PSC/PARC), 2020-44.