Abstract: In December 2019, the first cases of pneumonia of unknown etiology were found in Wuhan (China). Later, the pneumonia was associated with a new coronavirus; in February 2020, the World Health Organization (WHO) gave the name COVID-19 to the new disease, while the International Committee on Taxonomy of Viruses (ICTV) gave the name SARS-CoV-2 to the virus causing it. By March 11, 2020, when the virus had spread to 114 countries, the number of diagnosed patients had reached 118 thousand and the number of deaths was 4000, the WHO declared the outbreak of the disease a pandemic. In this review, we summarize the relevant information about the origin and spread of SARS-CoV-2, its epidemiology and diagnostics, and the clinical course and treatment of COVID-19. © 2020, Allerton Press, Inc.