Observation of patients suffering from acute COVID-19 shows that many of them have a long persistence of various symptoms, which often significantly worsen the quality of life and are combined with the concept of "postvoid syndrome". The study of this phenomenon is actively continuing, but its types and manifestations are already known, registers of patients are created, their condition is monitored, and postcovid syndrome is included in the International Classification of Diseases. The review covers predictors, mechanisms of development and main signs of Long-Covid, systemic affection of internal organs, which is explained, among other things, by damaging effect of the virus on different tissues, endothelial dysfunction and micro thrombosis. Particular attention is paid to the causes and types of cardiovascular system disorders. The features of functioning of the world health care system during the pandemic waves which influenced the cardiovascular morbidity and mortality are outlined. It is emphasized that postvascular syndrome is susceptible both to persons who had acute form of COVID and to asymptomatic patients. They equally require medical attention. Electronic means of communication help to provide such care during pandemic period.