Unfortunately, I haven't gotten a hold of PokéRus yet. I didn't battle too many wild Pokémon though, but if I did, there's a slight chance that my Pokémon would've been able to catch the virus. The new and improved Exp. Share does make it easy to train your Pokémon, but with the combination PokéRus, it would've made this process ten-times easier. Within only an hour or two, you would've been able to make any of your Pokémon reach twenty to thirty more levels. d:
I have a few Pokémon in my Black version that are contaminated with PokéRus. I'll see if I can transfer one of them over to Pokémon Y, somehow. Once I'm done with the transfer, I'll put it in my team for a few seconds, which would give me the chance to spread the virus to the rest of my party members. After that, I'll put the Pokémon into my PC for safekeeping. I may allow my friends to borrow it every now and then, so that they can be inflicted with PokéRus as well.