After what seemed like days of battling the police again, our vaccinated players wake up from a delirious sleep.
It would seem that this entire Déjà vu was simply the mind trying to cope with having been turned into a zombie and then back to human.
The body needed rest in order to deal with the transformation and heal itself. While the body slept, the mind tried to make sense of it all by replaying the horrific events that lead to the death of so many police in the pursuit of self-preservation.
Luckily, the antidote worked and our heroes can once again battle against the zombie hoard, but now with an intimate appreciation for what it is like to be a zombie.