 In December 2019, a cluster of fatal pneumonia cases caused by a previously unknown coronavirus emerged in Wuhan, China, leading to a global pandemic and widespread panic. The virus, named SARS coronavirus 2, SARS-CoV-2, is closely related to the 2002 SARS virus, SARS-CoV, and has caused COVID-19 disease. The scientific community is working to understand the pathogenesis of the disease, develop treatment options, define risk factors, and work on vaccine development. This article was authored by Ferasa Rabi, Mazar S.L.Zobi, Gina A.Kasazba, and others.