New South Wales
You ignore the eliminated Survivors.
It's mentioned in both the main rules:
Z:BP Rules - p16 wrote:
When you draw
a Zombie card to spawn Zombies, read the line that corresponds
to the Survivor still in play with the highest Danger
and also the Summary at the back of the rules:
Z:BP Rules - Summary wrote:
Danger Level used: highest Danger Level among active Survivors.