In the US, TB vaccine isn't given. Sis and mom both had to have skin tests, they were in a CNA class and were going to be doing practical exams in an actual nursing home, and they had to be tested. Sis had to get another test before she got a job in another nursing home a year later.
I think if it's negative you're fine, if it's positive, they treat you, but there's no more vaccination because of how rare it is. That's my understanding, at least.