Without an antidote, isn’t humanity inevitably doomed, even with the re-establishment of civilization, by virtue of people dying of natural causes in the middle of the night, turning into walkers, and going on feeding sprees?

Without an antidote, isn’t humanity inevitably doomed, even with the re-establishment of civilization, by virtue of people dying of natural causes in the middle of the night, turning into walkers, and going on feeding sprees?