One shot is not enough to boost immunity or to be fully protected. When is she due for the second booster? Perhaps she can get the shot somewhat early? You really need all three shots and sometimes four depending on the person. To be sure she should get the blood tested after the 3rd shot.
mkh9
Does ENGERIX-B protect from Precore mutant strain?
Hi PinoyHBVDNA,
I don't know the answer to your question regarding the Precore mutant strain. You can call the CDC at the 800 number below and hopefully they can answer your questions.
Call 1-800-232-4636 (1-800-CDC-INFO)
regards,
mkh9