How do I justify viral zombies not dying out?

Viral zombies, that is zombies that are alive, are much more terrifying than their undead equivalents. While they lack the required headshot of their undead brethren, they are faster and often smarter.

One disadvantage they do have is that logistically speaking, they will die out before they can become a full blown apocalypse (Like in 28 Days Later). But can this be avoided?

While it is never explained how, the infected in The Last of Us are able to survive years without food as well as exposure and below zero temperatures; a survival feature nearly exclusive to undead zombies.

How can I justify living zombies that can survive the elements?

posted over 7 years ago

Uncle Tres‭

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