It's true. It started becoming available while I was doing my internship--sometime in the late forties. It's truly changed the world. Hardly any of the sanatoriums are still open, because we can give people a gram a day for about a month and have them completely cured.

[Well, provided they didn't have a resistant strain of TB. But there are a number of different drugs coming out in his time that might help with that. That isoniazid stuff sounds particularly promising.]