What if you had a positive tb test and on meds for a year was told not to get another tb shot but did

Stay Positive: Once you have had positive TB test (ppd), it remains positive for life. It means you have been exposed to TB bug sometime in the past (latent tb). Since you've had treatment for latent tb, further PPD testing is not needed. Screening for active TB disease on basis of symptoms & xrays periodically is all you need. Extra TB shot (?Ppd i assume) will not harm you but you should let yr doc know abt it.