what do you mean zip, zero , zilch nada. didnt you yoursefl just pointed out that a virus got past their screening? and isnt it a fact that thousand of macs are infected by malware that even though it doesnt do anything to the mac it can be transmitted to other users when they use windows?
midway
You have to read correctly - he was speaking about a widespread infection. Even though it slipped past the screen, the impact was marginal. And/or this article was written prior to this discovery which was first of its kind.
Macs are not infected with windows malware because the malware cannot run on the mac. If the mac user has copied files from windows users that are indeed a problem for windows, then naturally the problem may spread. But it's not like macs constantly bombard windows machines with attacks like infected windows machines do.
Many Mac users are totally oblivious to security even to the extent that they believe running windows virtually inside osx makes it somehow 'protected'
Of course untill recently they have got away with it as virtually no attacks were even attempted against it. Even today the risk of infection is perhaps 0.001% compared to that of an unprotected windows and maybe less than 1% of a protected windows.