Okay so some Peolpe may have noticed a few bugs in this. I rewrote some of it and now the zombies spawn zombie divisions and i changed a few other things that bothered me (ai will now not change divisions, they can't research etc...)
However, since i'm too lazy too rewrite everything and still quite a lot of it is still original code (and gfx and so on), i would like to have OPs permission to upload it
Of course he will be linked as original author and it will be called "infection fix" or something

Quack Quack
A future Duck