MRSA and Mercer, infectious disease?

I got a phone call and was told that my uncle has "Mercer" (this is what it sounded like over the phone). I'm trying to look up info about Mercer and Im not getting much online... but when I search "Mercer", I get info about MRSA (basically staph infection).. are these two the same? Mercer vs. "mersa"? Anyone have any clue???