In 'Z Nation' season 2, three years have passed since the zombie virus gutted the country and team of everyday heroes must transport Murphy (Keith Allan) — the only known survivor of the plague — from New York to California, where the last functioning viral lab waits for his blood. Although the antibodies he carries are the world’s last and best hope for a vaccine, he also hides a dark secret that threatens them all.
So I'm placing this series in Zombie Toobworld in the near future of 'The Walking Dead'. Nothing about the viral lab needs to be known to the band at the center of the TWD action.
The timeline for Zombie Toobworld so far breaks down to this:
'Fear The Walking Dead'
'The Walking Dead'
As for 'iZombie', so far I don't think anything has happened that prohibits it from being part of the main Toobworld....
I chose that zombie picture because it made me think it could be the zombie version of "It's A Mad, Mad, Mad, Mad World".......