What happens if the interval between the 2nd and 3rd vaccination of the hepatiti!
Question:
What happens if the interval between the 2nd and 3rd vaccination of the hepatitis B virus is too long?
Can you still use the first 2 vaccinations eventhough 5 years have passed since my second vaccine of hepatitis b? Or should I start by scratch and receive all 3 vaccinations (repeating the first 2)?
Answers:
you are probably already immune (i.e. formed antibody) as over 80% will develop immunity with the two shots. We do not start over, but merely give you the third shot at this point. I would check your antibodies after the 3rd dose (about 3-4 weeks). The correct test is called "hepatitis B surface antibody" and if positive, your vaccine worked perfectly.