Your TB stories made me recall my (fond) TB stories. I came from a country that requires tuberculosis vaccines as a school-entry requirement. I have the vaccine and antibodies. Then moved to a country that didn't have this requirement but I had to be tested to make sure I didn't have TB for things like camps, college, etc. The test is something like a vaccine that injects only dead TB cells, if the injection site welts up from anti-bodies then you had to get another whole panel of tests (like X-ray of lungs). Thankfully I've never had it but TB is apparently no joke. Though blasting my chest with radiation is no healthier :p

Anyway, thanks for sharing!