<s>[INST] when I was a child and traveled to far eastern countries with my da I had to have TB vaccinations at least twice and booster shots.  Now I am told by VA that I need to get treated for inactive TB in case I have respiratory problems later. Is this true and do I really need the Isoniazid treatments? [/INST] Hi, As per the WHO guidelines, the inactive TB does not require a full    course of AKT provided no symptoms , signs or other data suggestive of least activity of the tuberculous pathogen. Hope I have answered your query. Let me know if I can assist you further. </s>