Macs, VMs and Virii

Morning everyone!

I am about to install a new Mac at my work. It will be running OSX and Windows in parallel using a virtual machine for Windows.

We will be using virus protection for OSX.

Do I need to install antivirus for Windows too, or would the Mac antivirus suffice for both systems?

Oh, and please no “OMG you don’t need AV on a Mac” fanboy answers! 🙂

Thanks!