TB is not curable..The doctor will treat you but it will not kill the bacteria..it only weakens the the bacteria and make your immune system increased..but when your immune system becomes weak it will appear again the sign and symptoms of TB..TB is a communicable disease so that's why you are instructed to go out of the country.. it can acquired through cough, sneeze, speak, sing, or spitting by a person who have TB...and another information you should have continue your medication for a period of 6 months not 2 months because if you discontinue your medication you will make the bacteria become stronger or a result to drug tolerance.