A single dose of the hepatitis A vaccine provides protection for one year. To achieve long-term immunity, a booster dose is required, which extends protection for 25 years.
Initial Protection Period
The primary hepatitis A vaccination is administered as a single injection. This first dose offers effective protection for approximately one year. If you are planning international travel, it is recommended that you receive this injection at least two weeks before your departure to ensure adequate protection.
Achieving Long-Term Immunity
For comprehensive and extended protection against hepatitis A, a booster dose is necessary. This booster should be administered after the first year following your initial vaccination. Once you receive this second dose, your immunity against hepatitis A is significantly prolonged, lasting for up to 25 years without the need for additional boosters.
Hepatitis A Vaccine Protection at a Glance
Understanding the duration of protection is key when planning your vaccination schedule:
| Vaccination Stage | Protection Duration | Key Information |
|---|---|---|
| First Dose | 1 year | A single injection; ideally given 2 weeks before travel |
| Booster Dose | 25 years | Administered after the first year for extended immunity |
By following the recommended vaccination schedule, individuals can ensure long-lasting protection against the hepatitis A virus.
