As for the MRSA - go to pubmed and put in MRSA AND cranberry and you will find an article about cranberry extract inhibiting staph growth. (It doesn't just work for bladder infections!) You can give cranberry tablets or cranberry juice daily - at the very least, it might help prevent recurrences.
Also, while they've got him in the hospital, you might ask them to check his vitamin D level, if it hasn't been done in a while?
