Hmmm, I just realized...rly45acp, by "wild" did you mean out in the bush? I was thinking of normal, everyday life, but outside of healthcare settings, which is rather different than when you're hiking/backpacking far from civillization.

I realized the distinction after reading Weldon's comment about how we take bacteria with us into the woods. That's very true. If we develop a MRSA infection in the woods, I think odds are good that it's from bacteria that we carried with us from home, not something from the wild. I'm not sure if anyone has tried to quantify that risk, though.