Once upon a time, we had a handle on tuberculosis. We had good drugs to fight the disease, we knew how to use them, and when we used them right, the disease was cured. Not only did people stop dying of TB, we were maybe going to be able to stamp the disease out entirely. Good stuff.
In the 80s, it turned out that we were probably never going to be able to get rid of TB, because we screwed up. To treat the disease properly, you have to keep treating it even after you feel like you’re all better. This means that if, say, most of the TB treatment centers in New York City close down because it’s a solved problem, the couple of hundred people who still get TB have to trek across two boroughs to get to the sole remaining center and they have to keep on doing this every week even after they feel like they’re not sick any more.
...