inclusion criteria: * availability of signed and dated informed consent of the volunteer to * participate in the study * healthy male and female volunteers aged 18-50 and 50 and above. * ability and voluntary desire to independently keep records in the selfobservation diary, as well as to carry out all the repeated visits provided for in the study for control medical observation. * the voluntary desire of females to use methods of reliable contraception throughout the entire period of their participation in the study. * negative results for igm and igg antibodies to sars-cov-2. * absence of covid-19 diagnosis in history. * absence in the last 14 days of close contact with persons suspected of being infected with sars-cov-2, or persons whose diagnosis of covid-19 has been confirmed with laboratory. * negative test results for human immunodeficiency virus (hiv), hepatitis b and hepatitis c. * negative pcr results for coronavirus sars-cov-2 * according to the results of a chest x-ray, there is no pathological process in the lungs.

inclusion criteria: * availability of signed and dated informed consent of the volunteer to * participate in the study * healthy male and female volunteers aged 18-50 and 50 and above. * ability and voluntary desire to independently keep records in the selfobservation diary, as well as to carry out all the repeated visits provided for in the study for control medical observation. * the voluntary desire of females to use methods of reliable contraception throughout the entire period of their participation in the study. * negative results for igm and igg antibodies to sars-cov-2. * absence of covid-19 diagnosis in history. * absence in the last 14 days of close contact with persons suspected of being infected with sars-cov-2, or persons whose diagnosis of covid-19 has been confirmed with laboratory. * negative test results for human immunodeficiency virus (hiv), hepatitis b and hepatitis c. * negative pcr results for coronavirus sars-cov-2 * according to the results of a chest x-ray, there is no pathological process in the lungs.

inclusion criteria: - availability of signed and dated informed consent of the volunteer to - participate in the study - healthy male and female volunteers aged 18-50 and 50 and above. - ability and voluntary desire to independently keep records in the selfobservation diary, as well as to carry out all the repeated visits provided for in the study for control medical observation. - the voluntary desire of females to use methods of reliable contraception throughout the entire period of their participation in the study. - negative results for igm and igg antibodies to sars-cov-2. - absence of covid-19 diagnosis in history. - absence in the last 14 days of close contact with persons suspected of being infected with sars-cov-2, or persons whose diagnosis of covid-19 has been confirmed with laboratory. - negative test results for human immunodeficiency virus (hiv), hepatitis b and hepatitis c. - negative pcr results for coronavirus sars-cov-2 - according to the results of a chest x-ray, there is no pathological process in the lungs.

inclusion criteria: - availability of signed and dated informed consent of the volunteer to - participate in the study - healthy male and female volunteers aged 18-50 and 50 and above. - ability and voluntary desire to independently keep records in the selfobservation diary, as well as to carry out all the repeated visits provided for in the study for control medical observation. - the voluntary desire of females to use methods of reliable contraception throughout the entire period of their participation in the study. - negative results for igm and igg antibodies to sars-cov-2. - absence of covid-19 diagnosis in history. - absence in the last 14 days of close contact with persons suspected of being infected with sars-cov-2, or persons whose diagnosis of covid-19 has been confirmed with laboratory. - negative test results for human immunodeficiency virus (hiv), hepatitis b and hepatitis c. - negative pcr results for coronavirus sars-cov-2 - according to the results of a chest x-ray, there is no pathological process in the lungs.