I've known a couple of people who had it, too. The younger you are, and the better your immune system, the better off you generally are. Though, I saw a show a couple of years ago, about a young (early 20's?) and healthy girl who was where it was in the environment. She ended up in the hospital with surgery after surgery to try to save her, which they couldn't, in the end.
The problem, of course, is how resistant to antibiotics it is. That's a problem if one does end up with it.
Anyway, the people that I knew, except for one, eventually recovered, too.
The exception was my Dbil's Dfil. He got his in the hospital, so he wasn't well to begin with. He didn't pass away from it directly, but it drew his health down even more, and he was fighting it when they lost him. His wife did catch it from him, but she is still with us...or was the last that I heard, so she must have been successfully treated.
These days, our hospitals test you for it, both before you go in, and before you leave.
When I ended up in ICU, they tested me immediately, and again before I left.
And, when Dh had his defibrillator put in...which was done in a hospital quite a bit south of us, they did the same to him.
I'm sorry that your friend with health problems is not doing as well as he could be. I hope that he feels as well as possible, considering his ailments.
Thank you again. I know that our friend was very upset about the idea of losing his leg, and I can't blame him.
Love All Life; Thank You For Posting! :)