Characteristics of SARS-CoV-2 Seropositivity among Emergency Department Healthcare Workers at a Tertiary Care Center in Baltimore oleh Anna Russell, Edbert B. Hsu, Katherine Z. J. Fenstermacher, Erin P. Ricketts, Gabriella Dashler, Allison Chen, Kathryn Shaw-Saliba, Patrizio P. Caturegli, Andrew Pekosz, Richard E. Rothman