Vaccination against COVID-19 has been resumed in the polyclinic of the State Medical Institute of Ukraine, it is carried out for all patients who have already been vaccinated and revaccinated and wish to receive a booster dose.  Vaccination against COVID-19 is an important factor in the prevention of coronavirus disease caused by the SARS-CoV-2 virus. Even if a vaccinated person gets sick, the course of COVID-19 is less severe and has fewer complications.