So what treatment is he on? MRSA is a staphilococcus that is resistant to lots of antibiotics. Cultures are tested to see what will work as treatment. In wounds it can slow healing terrable and dressings with silver content are found to be very good in treating it. Topical treatment for humans here in the Uk would be hibiscrub bodywash, bactoban nasal cream and chlohexadine mouthwash, this would be used for 5days then nothing for 2 days then reswab....in most cases here it is cleared after 2 courses of treatment. MRSA in itself is more common than people think, it is spread by touch however if people get it in heir respiratory system it can be airbourn. In healthy humans it is not usually bothersome but in those with poor immunity it can make them extremely poorly.
Ensure you maintain good hand heigene and if you can get hand wash containing chlorhexadine or an alcohol based one they would be a good idea to use after handling Norm. As long as your wound is coveted with a dressing you should be ok but I would visit my doctor for swabs just to be safe if I were you.
Bare in mind I am a UK nurse not stateside so our treatments may be different but the bug is the same.