If you panic you have already lost, or at least given your corps friends a leg up. Stay as calm as you can, you have all of your thought capabilities they do not.
use the tell tall sings that zombies are afoot. Zombie moans, smell, the fleeing of small animals and children. If you see them before they see you your style-N.
Stay smart, all they want to do is eat you if you can think past that you got one up on them.
If you think your hidden and they cant find you your good as zombie food. They can track you for miles by your dude stink. If your hiding make sure you have multiple exits or are at least behind steal doors.