Okay this is a waste of time for these people and i'll tell you why.
Believe me, i like zombies and it would be cool if there was a zombie apocalypse, but it won't happen.
>"zombie disease" starts
>it starts in some town
>some people are getting sick. only a few.
>news covers this sickness
>people actually start turning into zombies
>because this isn't a horror movie everyone knows what a zombie is.
>everyone loves zombies
>everyone knows how to kill them
>the first 50-100 zombies in this town all get killed because everyone knows what a zombie is
>everyone just mercilessly kills them all with whatever they have
>apocalypse avoided.
>all because of horror movies.
and that's why a zombie outbreak won't happen. we'll kill them too fast for it to actually spread.