>>32847167Viruses aren't animals so I don't think they'd count any more than plants or prokaryotic cells. I'm assuming a Pokémon would have to at least belong to the kingdom Animalia. But that is at least evidence that some type of microorganism exists.
I assumed in game that infestation wasn't literally insects but some type of protistic, self-generated organs that the Pokémon controls mentally, like how Grass Pokémon can sprout leaves and seeds that can be shot or controlled.
