Original ArticlesCOVID-19 Epidemiology, Pathophysiology, Transmission, SymptomsLeap, Jennifer DO; Villgran, Vipin MD; Cheema, Tariq MDAuthor Information Division of Pulmonary Critical Care Medicine, Allegheny General Hospital, Allegheny Health Network, Pittsburgh, Pennsylvania. Correspondence: Tariq Cheema, MD, Pulmonary Lab, Division of Pulmonary Critical Care Medicine, Allegheny General Hospital, Allegheny Health Network, 320 East North Ave, Pittsburgh, PA 15212 (Tariq.firstname.lastname@example.org). Conflicts of Interest: Jennifer Leap, DO, and Vipin Villgran, MD, have no conflicts of interest to declare. Tariq Cheema, MD, serves on the speaker's bureau for Boehringer Ingelheim, GSK. Critical Care Nursing Quarterly: October/December 2020 - Volume 43 - Issue 4 - p 338-342 doi: 10.1097/CNQ.0000000000000319 Buy Metrics Abstract COVID-19 is caused by the coronavirus known as SARS-CoV2. This virus may lead to asymptomatic cases, mild illness, or acute respiratory distress syndrome. Here we describe the epidemiology, pathophysiology, transmission, and symptoms of the virus. © 2020 Wolters Kluwer Health, Inc. All rights reserved.