Pretty rare in most countries to still have TB as a major problem. In my 20 years of nursing , I never had a patient with it that I know of. There is a simple test for it where they inject a tiny bit of chemical under your skin near the wrist and if you have it there is a reaction the next day. Night sweats and a bad cough can be a sign to watch for. In some countries with poor sanitary conditions where you are jammed in trains & buses like sardines , there are still cases that spread. Caught early , it usually can be treated and cleared up. Maybe next time you are at the doctors , ask him about your area.