he number of confirmed cases of COVID-19 exceeded 35 million, and the number of deaths amounted to 770 thousand cases, and this data is setting new records every day. According to the decree of the Government of the Russian Federation of 31.01.20 No. 66, SARS-CoV-2 is included in the list of diseases that pose a danger to others, along with particularly dangerous infections. The article presents the latest data on the properties of the virus, its resistance, transmission routes, and mechanisms of action. Attention is focused on the features of collecting anamnesis, conducting diagnostics, and complex treatment of patients with suspected COVID-19. The authors conclude that when treating these patients in a surgical hospital, it is necessary to take into account the increasing complexity of the work of medical personnel, the conduct of thorough disinfection of all equipment, it is recommended to use remote consultations and monitoring of the condition of patients, suspend programs of face-to-face monitoring of treated persons, reduce the number of visits to patients by medical staff, take into account the likelihood of a significant decrease in tissue oxygenation, body defenses, the development of water-electrolyte disorders, exacerbation of chronic diseases, activation of "dormant" foci of infection, mutual aggravation of viral infection, pneumonia and surgical pathology, administration of glucocorticosteroids and low-molecular-weight heparins.