Abstract

The COVID-19 epidemic has gradually passed from an acute to a protracted form, and by the second year of the pandemic, a “post-COVID syndrome” is being recorded. Completion of the acute phase of coronavirus infection has a different duration. This is shown by dynamic observations of millions of patients who have been ill over the past 2 years. The article discusses the clinical signs of post-COVID syndrome observed in subacute and chronic forms of COVID-19 disease. In the post-COVID period, the consequences of the COVID-19 disease and the causes of their occurrence are considered. In a third of patients, the acute inflammatory period of the disease can pass without any consequences. In the severe course of the disease, most patients experience various clinical signs and residual effects. Often these residual effects are proportional to the severity of the disease, in some cases the outcome and residual effects do not depend on the period of acute inflammation and the severity of the disease.