Observational Program, Study the Preventive Efficacy of the BiVac Polio Vaccine Against the Incidence of Acute Respiratory Infections, Including COVID-19

To carry out a comparative assessment of the indices of humoral, cellular immunity and cytokine profile in patients with acute respiratory infections. Current Program Population: 1500 healthy male and female volunteers, aged of between 18 and 65 will be included in the program. All included volunteers will be divided into groups: Group 1 - 750 volunteers who will be vaccinated with BiVac polio vaccine; post-vaccination observation period of 12 months. Group 2 - 750 volunteers, placebo will be administered, post-vaccination observation period of 12 months. The probability of getting into one of the two groups for each volunteer will be 50%.