There has been more than one occasion where we've run out of Zombies to place on the table due to there only being enough for each Tile and not taking into account additions make by event cards. So I've created some Zombie tokens to use in the Zombie Pools to account for five Zombies.
The file is attached for anyone needing to free up some Zombies for the game without having to remember, or write down how many Zombies are in each player's pool.