With much amusement, I noticed that TB (tuberculosis) was number 6 on that Wikipedia Watch-Out-For-This list we've been talking about.
In South Africa, TB (next to HIV) is the highest prevalent infectious disease. Even as a first year fledgling, we were taught it's TB, TB, TB until proven otherwise. I can diagnose it in my sleep. Even interns (especially interns because they deal with the crap) treat this shit for breakfast.
AND. We don't wear masks everytime we deal with patients. Our immune systems are THAT hardcore. American medicine might think that foolhardy. We just call each other Chuck and carry on with business.