Prognostic Factors Associated with the Severe Course of a New Coronavirus Infection

Introduction. Novel coronavirus infection (COVID-19) is a respiratory infectious disease caused by the novel severe acute respiratory syndrome 2 coronavirus (SARS-CoV-2). It is characterized by a heterogeneous course of the disease from asymptomatic and mild forms to more severe and fatal outcomes. There are many risk factors for a severe course of a new coronavirus infection, in most cases, a severe course of the disease is associated with the individual characteristics of the patient, especially with dysregulation of the immune response. In this article, we reviewed the main prognostic factors for the severity of the disease.The aim of the study is to determine the unfavorable prognostic factors associated with the severe course of a new coronavirus infection caused by the SARS-CoV-2 virus in foreign and domestic literature sources.Materials and methods. To achieve this goal, scientific publications on the new coronavirus infection caused by the SARS-CoV-2 virus were analyzed in the scientometric databases PubMed, National Center for Biotechnological Information (NCBI), Cochrane, Web of Science, Scopus, MEDLINE (2019–2022), and Russian specialized journals on infectious diseases (2019–2022). Particular attention was paid to factors influencing the severe course of a new coronavirus infection.Results. Risk factors for a severe course of a new coronavirus infection include: lipid spectrum, advanced age, hemostasis system, changes in the leukocyte count, serum markers. Mathematical models of the course of a new coronavirus infection have also been developed.Discussion. In most studies, scientists note that the uncontrolled course of COVID-19 disease is associated with a dysregulated immune response. One of the main methods of influencing the immune system is vaccination.Conclusion. There are many factors that contribute to the development of severe forms of the disease of a new coronavirus infection. However, thanks to universal vaccination against a new coronavirus infection, the frequency of severe forms of the disease and deaths has significantly decreased. Novel coronavirus infection (COVID-19) is a respiratory infectious disease caused by the novel severe acute respiratory syndrome 2 coronavirus (SARS-CoV-2).