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 self-observation 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.

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 self-observation 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.

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 self-observation 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.

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 self-observation 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.