[@Overlord24][@A Tattooed Girl] 

Both interesting propositions. 
Perhaps after a cure is found, they can set up more walls/fences around Eon Town to keep out the zombies and rebuild society there. (Zombies aren't coming back- It'll just be a vaccine probably)

As for the ditto thing, maybe eevee instead? I can see their genetic makeup causing mutations in the virus. 

... First thing I see searching up Ditto:

[img]http://cdn.pokestache.com/2013/12/31/pokestache.com_9525_1388774331.jpg[/img]

Stuff of nightmares.