Assessment of Immunogenicity, Reactogenicity and Safety of the Drug GNG-DE in Comparison With the Reference Drug

Inclusion Criteria:

1. Male and female subjects aged 3-55 years old inclusive at the time of screeningbeginning.

2. Availability of a signed Volunteer Informed Consent Form (Volunteer InformationSheet, VIS) (for participants aged 7-55 years inclusive) and/or the parent/adoptiveparent informed consent form (Parent Information Sheet, PIS) signed by one ofparents/adoptive parents (for participants aged 3-17 years old inclusive).

3. Negative result of SARS-CoV-2 antigen rapid test at screening.

4. Negative pregnancy test result in fertile females of reproductive age. For femalesnot reached puberty, and for girls/women unable to childbirth (with pastinfertility, hysterectomy, bilateral oophorectomy, bilateral tubal ligation,menopause for more than 2 years), the pregnancy test shall not be performed.

5. For participants of 14-55 years old inclusive with preserved reproductive function,the consent to use of reliable methods of contraception (abstinence, condoms incombination with spermicide and/or hormonal contraception) during the study. For participants aged 3-13 years old inclusive and females incapable ofchildbearing, the consent to use reliable methods of contraception is not required.

6. The consent of a participant and/or a parent/an adoptive parent of a participant tocooperate in good faith with the investigator and the center staff, come toappointed visits, fill out the observation diary and comply with the requirements ofthe Protocol.

Exclusion Criteria:

1. Hypersensitivity to any component of the test/reference drug.

2. Evident severe systemic reactions to any vaccines in anamnesis.

3. Impossibility of intramuscular injections.

4. Changes in the skin (pigmentation, tattoo, scars etc.) at the planned injection siteof the test/reference drug (the deltoid muscle area).

5. Acute infectious and non-infectious diseases, exacerbation of chronic diseases atscreening or less than 14 days before screening.

6. Body temperature measured in the armpit ≥ 37.0°C at Visits 0 and 1.

7. The history of chronic diseases that are significant in the opinion of theinvestigator (for example, malignant neoplasms, blood diseases, autoimmune diseases,immunodeficiencies, etc.).

8. The history of meningococcal infection.

9. Contact with a person with the confirmed infection caused by N. meningitidis lessthan 2 months before screening.

10. The history of convulsive syndrome or the advanced neurological disease.

11. The history of Guillain-Barré syndrome.

12. The history of mental diseases.

13. Drug administration:

• the history of meningococcal mono- or polyvalent vaccine, influenza vaccinewithin 14 days before screening, other vaccines within 30 days beforescreening;

• immunostimulants less than 30 days before screening;

• the immunosuppressive therapy, including systemic corticosteroids, prescribedfor more than 5 days, or in the daily dose of more than 1 mg/kg/day ofprednisolone or its equivalent - less than 30 days before screening;

• antipyretics, analgesics - for less than 24 hours before Visits 0 and 1;

• systemic antibacterial drugs-- for less than 72 hours before Visits 0 and 1;

• anticoagulants - for less than 3 weeks before Visits 0 and 1;

• immunoglobulins, blood or plasma products - for less than 3 months beforeVisits 0 and 1.

14. Planning the administration of vaccines with the exception of the test/referencedrug during the clinical study.

15. Surgical interventions performed less than 3 months before screening.

16. Participation in another clinical study less than 30 days before screening.

17. Other conditions that, in the opinion of the investigator, interfere to theenrollment.