Instead of THE GUBBMINT being evil by LOCKING EVERYTHING DOWN in some scary QUARANTINE ZONE or the like, imagine a “got to build up zombie bite immunity” response, or one with pseudoscientific treatments, or pretty much anything so can feel like things are back to normal while zombies are just a thing that continues happening.
Add your own ideas if you like.
I wrote a short novel like this in the summer of 2020, although this was back when liberals were pretending to care about the pandemic. “Zombies invade a Maine tourist town but nobody notices.”