The new experimental TB vaccine dubbed M72 is showing good results while being tested in Africa. But the catch is.... It only works if you already have TB. It's doing about a 52% success rate. If I get TB from one of the fence jumpers here or they develop one that doesn't require you to have TB for it to work put me on that list. I would advise waiting for the 2nd Gen version if possible. Because after TEOTWAWKI I expect TB to make a big come back.