I've gotten a number of them today too - including some bounces from email that spoofed one of my email addresses - ironically, one I NEVER use to
send email except VERY VERY occasionally. However, I'm a member of a big MA school system tech email list using that addy, so no doubt someone in one of MA schools has been infected. I've received many Windoze virii over the years on my trusty Macs - and they just sit there, harmless. It's sort of like looking at a sleeping rattlesnake...
The only thing that I've ever gotten from my PeeCee friends that affected my system was an infected macro in a Word file - those are cross-platform. But, thankfully, relatively easy to avoid or remove.