@MikeMason-- As far as I know, there are different types of MRSA infections. Some of them are easier to spread than others.
I also had a relative with MRSA, but the infection was in his lungs and he had to be isolated. No one could enter the room without wearing gowns and masks.
I had an MRSA skin infection a few years ago and I didn't have to be isolated for that. I was just told to keep my wound clean and avoid skin contact with other people until the infection cleared up.
So the precautions for MRSA depend on the type and severity of the infection.