The role of hepatitis B vaccine

The fact that you have antibodies does not guarantee that you will not be infected in the future, because antibodies weaken with time, age, immunity, etc.

So you have to go for a review after a number of years.

So after a number of years, you have to go for a review, if the result of the review is that the antibody is negative, then you need to re-vaccinate, and if the antibody is still positive, then you can not play or only play a shot to consolidate.