One In Five Macs Holds Malware — For Windows
judgecorp writes "One in five Apple Macs is infected with malware, according to Sophos. But most of that is harmless to the Mac... it is Windows malware ready to be transmitted to the Windows population. Only one in 36 Macs has OS X specific infections."
I would have to say I'm infected, but not affected by it.
Either way, you're fected.
Required reading for internet skeptics