I feel like after respawning you should have a small time window where you can't be damaged by zombies.
Happens far too often that I respawn around 20 zombies with no abilities and the starting gun and then get mauled immediately.
I have a strategy for that. Wait until the zombies go away then respawn, it helps out a lot.
Unfortunately not in your control when a team mate runs through a horde to revive you though