It can give you the trots if you get it through food. It lives on all of us, sometimes if you are unlucky you get too much of it and it can infect cuts etc, I was plagued with it for 2 years, nasty boils etc.

This one is on the way out now, its got to the stage where I can straighten my arm and it has begun to weep... lovely stuff.

Its the same type of bug as MRSA, which stands for Methicillin Resistant Staphylococcus Aureus, fortunately I have the one which is not resistant to antibiotics.