Menquadfi (MenACYW-TT)
Quadrivalent meningococcal tetanus toxoid conjugate vaccine · Sanofi Pasteur
Prevents
Dosing schedules
Infants aged 6 weeks to 6 months: 3 doses and 1 booster in the second year
For: Infants (0–1 year)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (MenQuadfi) | 2 months (earliest 6 weeks) | – |
| Dose 2 (MenQuadfi) | At least 2 months after dose 1 | 60 days |
| Dose 3 (MenQuadfi) | At least 2 months after dose 2 | 60 days |
| Booster (MenQuadfi) Booster | 12 months | 60 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Children aged 6–11 months: 1 dose and 1 booster in the second year
For: Infants (0–1 year)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (MenQuadfi) | 6 months (earliest 6 months) | – |
| Booster (MenQuadfi) Booster | 12 months | 60 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
From 12 months: 1 dose
For: Young children (1–3 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Single dose (MenQuadfi) | Children from 12 months and adults; a booster can be given to people previously vaccinated against the same meningococcal serogroups | – |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Special precautions
Indicated from 6 weeks of age through older adulthood.
Pregnancy and breastfeeding
Safe