I have it. About 5 years ago, after taking some amoxicillin the dentist gave me after having a tooth extracted, I became very ill after two days. I can't even tell you how bad it was, just really bad. They put me on the only drug that helps with it, and it went away. But it does come back. I have had two reoccurances of it this year. I did not get it from the hospital. Just from taking wide spectrum antibiotics. Last spring they put me in the hospital when I was having a bout with it, but that was mainly because it caused my blood suger to sky rocket. I was put in an isolated room for preventative measures.
Oh, and it wasn't massive doses of antibiotics I was on, and I had only been on them a full day and a half when I got ill.
The hospitals are catching alot of flack, but people need to be aware that it's not just 'a hospital bug'.