Twinrix
Combined hepatitis A and hepatitis B vaccine · GlaxoSmithKline (GSK)
Prevents
Dosing schedules
Children aged 1–15: 2 doses (0, 6–12 months)
For: Young children (1–3 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (Twinrix) | Chosen date | – |
| Dose 2 (Twinrix) | 6–12 months after dose 1 | 180 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
From 16 years: 3 doses (0, 1, 6 months)
For: Adults (18–59 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (Twinrix) | Chosen date | – |
| Dose 2 (Twinrix) | 1 month after dose 1 | 30 days |
| Dose 3 (Twinrix) | 6 months after dose 1 | 150 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
From 16 years, accelerated: days 0, 7, 21 and a booster after 12 months
For: Adults (18–59 years)
| Dose | Age | Minimum interval from previous dose |
|---|---|---|
| Dose 1 (Twinrix) | Chosen date | – |
| Dose 2 (Twinrix) | Day 7 | 7 days |
| Dose 3 (Twinrix) | Day 21 | 14 days |
| Booster (Twinrix) Booster | 12 months after dose 1 | 344 days |
Source: Recommended vaccination schedules for all ages in Vietnam (2026 edition). Reviewed on 07/10/2026.
Special precautions
Children aged 1–15 years: 2 doses 6–12 months apart. From 16 years: 3 doses (0, 1, 6 months) or an accelerated schedule of 0, 7, 21 days with a booster after 12 months.