For travellers heading to regions where Hepatitis A is prevalent, vaccination is one of the most important preventative measures you can take. Hepatitis A is a viral infection that spreads through contaminated food and water, posing a significant risk in many parts of the world. If you’re preparing for an upcoming trip, you may be wondering: how long does the vaccine for Hepatitis A last, and can you still contract the virus after vaccination? At Brixton Travel Clinic, we prioritise travel health and want to ensure you are fully informed about the benefits of vaccination.
How Effective Is the Hepatitis A Vaccine?
The Hepatitis A vaccine is highly effective at preventing infection. A single dose provides good protection within a few weeks, but a second booster dose (usually given six to twelve months later) ensures long-term immunity. Studies indicate that after receiving both doses, immunity lasts for at least 20 years, with some evidence suggesting it may even provide lifelong protection.
While no vaccine is 100% effective, the Hepatitis A vaccine offers over 95% protection after the first dose and nearly 100% protection after the full course. This makes it one of the most reliable vaccines available for travel health.
Can You Still Get Hepatitis A After Vaccination?
Although extremely rare, breakthrough infections can occur. These cases are typically linked to individuals who:
- Have only received one dose and are exposed to the virus before receiving their booster.
- Have compromised immune systems that may affect their ability to develop full immunity.
- Were exposed to Hepatitis A before the vaccine had time to take effect (it takes approximately two weeks for initial immunity to develop).
However, for those who are fully vaccinated, the chances of contracting Hepatitis A are incredibly low. Even in the rare instance of breakthrough infection, symptoms tend to be significantly milder compared to those in unvaccinated individuals.
How Vaccination Reduces the Severity of Symptoms
One of the key benefits of the Hepatitis A vaccine is that, even if an individual were to contract the virus post-vaccination, their symptoms would be far less severe. Hepatitis A can cause prolonged illness, including jaundice, fatigue, nausea, and liver inflammation. In severe cases, particularly in older adults or those with pre-existing liver conditions, the virus can lead to complications requiring hospitalisation.
For vaccinated individuals, any potential symptoms are usually mild and short-lived. The vaccine primes the immune system to respond quickly and effectively, preventing the more serious complications associated with Hepatitis A. This means that even if you do encounter the virus during your travels, you are far less likely to experience significant health issues.
Why Travellers Should Prioritise Hepatitis A Vaccination
Travellers to destinations with higher rates of Hepatitis A, such as parts of Africa, Asia, Central and South America, and the Middle East, are at an increased risk of exposure. The virus is commonly spread through:
- Contaminated food and water
- Poor sanitation facilities
- Close contact with infected individuals
As a result, vaccination is strongly recommended before travel to these regions. Even if you are staying in a high-end resort or only consuming bottled water, the risk cannot be entirely eliminated. Hepatitis A can be transmitted through ice cubes, fresh produce, or even improperly washed utensils. A simple vaccination can provide long-term peace of mind, ensuring you enjoy your travels without the worry of infection.
How Long Does the Vaccine for Hepatitis A Last?
If you have received both doses of the Hepatitis A vaccine, you can expect protection for at least 20 years, with many experts believing it lasts a lifetime. Those who have only had one dose will still have some protection, but it is advisable to complete the second dose for optimal and long-lasting immunity. If you’re unsure about your vaccination status, a blood test can determine whether you still have protective antibodies.
When Should You Get Vaccinated Before Travel?
Ideally, you should get your first dose of the Hepatitis A vaccine at least two weeks before travel. This will allow your body time to develop immunity. If you’re travelling on short notice and haven’t been vaccinated, it’s still worth getting the injection, as even a last-minute dose provides some protection. The second booster dose can be taken once you return home to ensure long-term immunity.
Visit Brixton Travel Clinic for Your Hepatitis A Vaccination
At Brixton Travel Clinic, we specialise in travel vaccinations and offer expert advice on protecting your health abroad. Whether you’re heading to a high-risk destination or just want to ensure you’re fully protected, our team is here to help.
If you have any questions about how long does the vaccine for Hepatitis A last, or whether you need a booster, contact Brixton Travel Clinic or get in touch with our expert team.
Don’t let Hepatitis A put your travel plans at risk. Book your vaccination appointment today and travel with confidence knowing you’re protected.
This blog was written on behalf of Brixton Travel Clinic by Pharmacy Mentor.