From the Introduction: "Coronavirus disease 2019 (COVID-19) is a newly emergent human disease caused by a naturally arising, novel coronavirus--the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The virus spreads easily from person to person through respiratory droplets, and infection typically causes fever, loss of taste or smell, shortness of breath, a dry cough, and/or other symptoms and complications associated with COVID-19. The ease with which the virus spreads and the virus's ability to be transmitted by asymptomatic individuals have caused possibly the most severe worldwide infectious disease pandemic of the modern age. More than 100,000 Americans died from COVID-19 within the first four months of the pandemic, contributing to more than 350,000 deaths worldwide in the same time period."
National Institutes of Health: https://www.nih.gov/