Offline
If they are still clinging, nothing short of zombies will convince them
Maybe not even that. I could see them watching zombies eat people and cursing the media the entire time
I watched an epidemiologist talk about how there are always people that think everything is an overreaction. The problem with an outbreak like this is that to slow the spread you need drastic action. Then when those actions work those same people point and say "see, it wasn't that bad." Even though it was the actions taken that made it better than it would have been otherwise.