Zombies (World War Z)

The Zombies from World War Z (better known as Z's) have been spreading their infection throughout the out. The origins of the outbreak is unknown. Those bitten are transformed into zombies after 12 seconds. They are known to being attracted to noises. They can sense if a human victim is healthy. The infected do not bite people who are seriously injured or already terminally ill, since they would be unsuitable as hosts for viral reproduction.