Have any of you ever heard of Pokerus?

Well, it is this extremely rare quality that can be found in wild Pokemon. It has the ability to raise a Pokemon's stats and IV's, making them a stronger Pokemon. Not only that, but it can also spread to other pokemon in your party, creating a world wide disease of stronger Pokemon!

And what is this chance of finding this rare Pokerus? Why, 1 out of 21,845 of course! Even a less likely chance than finding a shiny. 

But the crazy thing is, I once found a shiny Lillipup with Pokerus! It was the greatest accomplishment of my life.