International Journal of Environmental Research and Public Health Article Long-Term Exposure to PM2.5, Facemask Mandates, Stay Home Orders and COVID-19 Incidence in the United States Fang Fang 1, Lina Mu 2, Yifang Zhu 3,4, Jianyu Rao 1,5, Jody Heymann 6 and Zuo-Feng Zhang 1,7,8,* 1 Department of Epidemiology, Fielding School of Public Health, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA;
[email protected] (F.F.);
[email protected] (J.R.) 2 Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA;
[email protected] 3 Department of Environmental Health Science, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA;
[email protected] 4 Institute of the Environment and Sustainability, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA 5 Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA 6 WORLD Policy Analysis Center, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA;
[email protected] 7 Jonsson Comprehensive Cancer Center, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA 8 Center for Human Nutrition, Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles (UCLA), Los Angeles, CA 90095, USA * Correspondence:
[email protected] Abstract: Long-term PM2.5 exposure might predispose populations to SARS-CoV-2 infection and Citation: Fang, F.; Mu, L.; Zhu, Y.; intervention policies might interrupt SARS-CoV-2 transmission and reduce the risk of COVID-19.