This isn’t a virus but a trojan.
Once again, if the footprint is so small, all someone needs to do is write one virus that affects OS X for all to see. Then you can continue with the nonsensical argument that the Mac “footprint” is too small. How many millions of Macs will it take?
Give us a number or continue to move the goal post.
I’ll give a number 20% of the user base. Then it might actually get some attention.