How many years is the Twinrix vaccine good for?
Immunity to the hepatitis B virus is thought to be lifelong. The hepatitis A vaccine is effective for at least 25 years in adults and at least 14 to 20 years in children.
If you've started your TWINRIX schedule, you will need to complete the vaccination series. Otherwise, you may not be fully protected against hepatitis A and B. Standard TWINRIX dosing is 3 vaccine doses over a span of 6 months. You choose the date for the first dose.
- Hepatitis A occurs worldwide but is more common in regions with poor sanitation and lack of safe food and water. Regions where there is a high risk of hepatitis A transmission include Africa, Asia and Central and South America.
- Protection lasts at least 10 years, if not for life after the booster. Protection from typhoid fever declines over time. Booster doses are recommended every 3 years where typhoid risk continues. Travellers, 16 years or older, to countries where hepatitis A and typhoid are known to exist.
- Flu shots are generally given in the arm, which can cause some pain and swelling. Normally it's fine to get on with your normal weightlifting routine following a flu shot. Sometimes, however, the side effects can make you feel less than ready to hit the gym and begin lifting weights again.
Updated: 2nd October 2019