>>716100149
>Crazies-style where the infection was so insidious at first it spread worldwide before anyone could notice
The Crazies is one of the best not-zombie zombie movies ever made, though a plot point there is that the virus is designed to kill the host after about a week of infection, so it's self-limiting (which makes sense since in both the original and the remake it was a weaponized virus). By design it couldn't really ever end the world.