I've got a crime to charge him with- reckless endangerment. A super-resistant strain of TB can and will kill you eventually, and if you are a carrier and don't care if you spread it (which it sounds like this person does not), you are basically opening up with an automatice weapon in a crowd.

Then again, I also think rapists who are HIV-positive should be charged with attempted murder. Unless thier victim tests possitive afterwards, in which case we make it murder.