Common infected as the name implies are made up of a group of zombies that overwhelm their victims but their lack of health and attack speed can put themselves at the wrong end of a shotgun when not in groups.

Common Infected attacking the player
Tips
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- Any weapon is effective against common infected but using swords will only cut off their legs thus using a firearm might be a better choice to kill them quickly.
- Groups of 3-4 zombies are capable of killing a survivor if the player refuses to acknowledge their attacks.