Influvac Tetra
Quadrivalent subunit seasonal influenza vaccine · Abbott
Prevents
Dosing schedules
Children aged 6 months to under 9 years vaccinated for the first time: 2 doses, then 1 dose every year
For: Infants (0–1 year)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (Influvac Tetra) | 6 months | – |
| Dose 2 (Influvac Tetra) | At least 4 weeks after dose 1 | 28 days |
| Annual booster (Influvac Tetra) Booster | One dose every year, before the influenza season | 300 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
From 9 years: 1 dose every year
For: Adolescents (9–17 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Annual influenza dose (Influvac Tetra) Booster | One dose every year | – |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Special precautions
Children aged 6 months to under 9 years who have never had an influenza vaccine need 2 doses at least 4 weeks apart; then 1 dose every year.
Pregnancy and breastfeeding
Safe