Prevenar 20 (PCV20)
20-valent pneumococcal conjugate vaccine · Pfizer
Prevents
Dosing schedules
3+1 schedule (from 2 months, 4 weeks apart, booster at 11–15 months)
For: Infants (0–1 year)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (PCV20) | 2 months (earliest 6 weeks) | – |
| Dose 2 (PCV20) | 4 weeks after dose 1 | 28 days |
| Dose 3 (PCV20) | 4 weeks after dose 2 | 28 days |
| Dose 4, booster (PCV20) Booster | 12 months (earliest 11 months) | 60 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Catch-up for unvaccinated children aged 7–12 months
For: Infants (0–1 year)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (PCV20) | 7 months | – |
| Dose 2 (PCV20) | 4 weeks after dose 1 | 28 days |
| Dose 3, booster (PCV20) Booster | 2 years | 56 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Catch-up for unvaccinated children aged 12–24 months
For: Young children (1–3 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (PCV20) | 12 months (earliest 12 months) | – |
| Dose 2 (PCV20) | 8 weeks after dose 1 | 56 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
From 2 years: 1 dose
For: Preschool children (4–6 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Single dose (PCV20) | At least 8 weeks after any previous PCV13 dose | – |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Special precautions
Indicated from 6 weeks of age. People aged 2 years and over receive 1 dose, at least 8 weeks after any previous PCV13 dose.
Pregnancy and breastfeeding
Safe during breastfeeding