Inclusion Criteria:

For volunteers aged 10 to 17 years:

- Healthy children of both sexes aged 10 to 17 years (10 years 0 months 0 days - 17
years 11 months 30 days);

- The availability of written and dated informed consent of the volunteer (children
aged 14 to 17 years) and their parent / legally acceptable representative for
participation in the trial;

- If the volunteer has sexual relations, effective contraception methods must be used
during the 30 days preceding vaccination and consent must be obtained to continue
using these contraceptive methods during the trial and for two months after
vaccination;

- The girls with menses in the medical history shall have a negative pregnancy test
result.

For volunteers aged 3 to 9 years:

- Healthy children of both sexes aged 3 to 9 years (3 years 0 months 0 days - 9 years
11 months 30 days);

- The availability of written and dated informed consent of a parent / legally
acceptable representative for participation in the trial;

For volunteers aged 6 to 35 months:

- Healthy children of both genders aged 6 to 35 months, inclusive (6 months 0 days -
35 months 30 days);

- The availability of written and dated informed consent of a parent / legally
acceptable representative for participation in the trial.

- The trial subject of the was born full-term, with the Apgar score of 7-10 points.

For all volunteers:

The ability of a volunteer's parents / legally acceptable representatives to perform the
requirements of the Protocol (i.e., fill out the Patient Diary, attend visits together
with the volunteer).

Exclusion Criteria:

1. History of influenza (including in mothers for children aged 6 to 35 months) or
previous influenza vaccination during 6 months before the trial;

2. Vaccination of the pregnant woman in the 2nd-3rd trimester (for the age group of 6 -
35 months) with an influenza vaccine

3. Positive result of the SARS-CoV-2 test;

4. Vaccination with any vaccine less than 30 days before participating in the trial or
scheduled vaccination with any vaccine within 30 days after vaccination with the
trial vaccines;

5. A serious post-vaccination reaction (temperature above 40 °C, hyperemia or edema
more than 8 cm in diameter at the injection site) or complications (collapse or
shock-like condition that developed within 48 hours after vaccination; convulsions
accompanied or not accompanied by a fever due to any previous vaccination),
encephalopathy;

6. Allergic reactions to vaccine components or any previous vaccination;

7. History of allergic reaction to chicken protein;

8. History of cancer, leukemia, tuberculosis, autoimmune diseases;

9. Carriage of HIV, syphilis, hepatitis B and C in the medical history, including by
parents / legally acceptable representatives;

10. Children who received immunoglobulin products or transfusions of whole blood or its
components less than 3 months before the start of the trial;

11. Long-term use (more than 14 days) of any immunomodulating medicines less than 3
months before the start of the trial;

12. Any confirmed or suspected immunosuppressive or immunodeficiency condition;

13. History of chronic diseases of the cardiovascular, bronchopulmonary, endocrine
systems, blood in the acute stage (recovery less than 4 weeks before vaccination) or
in the decompensation stage;

14. Children with hemophilia who may develop bleeding after intramuscular injection;

15. History of progressive neurological pathology, convulsive syndrome, afebrile
convulsions;

16. History of acute infectious diseases (fever ≥ 37.5°С): recovery less than 2 weeks
before vaccination;

17. Participation in another clinical trial less than 3 months before the start of the
trial;

18. History of mental illness of the child and the volunteer's parents;

19. The history of the volunteer's parent / legally acceptable representative being
registered with a tuberculosis dispensary and/or a narcological dispensary;

20. Maternal history of drug use or alcohol abuse during pregnancy and/or breastfeeding;

21. Pronounced congenital malformations in a child;

22. Suspected developmental delay in a child.