Hi, if you taken a complete course of antituberculous therapy and if you are healthy and symptom free now, its unlikely that you will get the infection again. But tuberculous infections are known for recurrence. There is no hard and fast rule for this, its likely to start with clinical symptoms first, like loss of appetite, weight loss, low grade fever and a general feeling of unwellness. If you experience any symptoms go for retesting. And tuberculosis heals by fibrosis, and it will not disappear nor will it progress either, so dont worry. Take care.
thanks Doc.
I did go for restesting-sputum, apico, pft and chest ctscan). All came negative and shows fibrosis with no interval change.