>The Infected<

Learn about all the Infected types in Left 4 Dead 2, including Common Infected like the Hazmat and Clown, and Special Infected. Discover their abilities, health, and how to anticipate them.

The Infected are the primary antagonists in Left 4 Dead 2. Alongside the numerous Common Infected, there are more dangerous, mutated variations known as Special Infected. These Special Infected actively hunt Survivors, and Boss Infected are even rarer and more powerful, capable of incapacitating a Survivor quickly. Boss Infected often appear when fewer Common Infected are present.

Common Infected

• Common Infected: Normal-looking zombies with pale skin and blank eyes. They attack by charging and can slow Survivors on hit. They are dangerous in large numbers.
• Hazmat Infected: Dressed in hazard suits, they are immune to fire. They may drop Bile Bombs.
• Fallen Survivor Infected: Appear with military gear. They run from Survivors when attacked and can drop useful items like grenades or health kits. They have partial resistance to headshots and are immune to fire bullets and explosive effects from Bile Bombs or Pipe Bombs. They are tough and may escape to reappear later.
• Clown Infected: Wear clown makeup and striped pants. Their squeaky shoes attract other Infected, potentially spawning more. Their noses can be honked.
• Mud Men: Covered in mud and crawl on all fours. They are agile, fast in water, and smear mud on Survivors' faces to obscure vision.
• Construction Worker Infected: Wear construction uniforms and hard hats. They ignore Pipe Bombs and have resistance to melee weapons and headshots.
• Riot Infected: Wear riot gear and are immune to frontal damage.

Anticipating Infected:

Infected are more likely to appear during Panic/Crescendo Events, when they spot Survivors, after a Boomer vomits on someone, or when the Horde chime is heard.

Infected Abilities:

• Claw: Standard melee attack.
• Climb: Ability to climb surfaces.
• Immunity to fire: Hazmat Infected are unaffected by fire.
• Running and vanishing: Fallen Survivors may flee.
• Attract Infected: Clown Infected draw other Infected.
• Swim: Mud Men are fast in water.
• Mud Smear: Mud Men obscure Survivor vision.
• Ignore Pipe Bombs: Construction Workers are unaffected by Pipe Bombs.
• Resistance to Melee weapons and Headshots: Construction Workers are tougher against these.
• Immunity to damage to the front: Riot Infected cannot be damaged from the front.

Health:

• Common Infected (excluding Fallen Survivor, Construction Worker, and Riot Infected): 30/50/90.
• Fallen Survivor Infected: 1000.
• Construction Worker Infected: 40/60/100.
• Riot Infected: 30/50/90.

Drops:

• Hazmat Infected can drop Bile Bombs.
• Fallen Survivor Infected can drop Grenades, Health Kits, and Consumables.

Sounds Emitted:

• Common Infected: Generic grunting, generic shouting.
• Clown Infected: Adds squeaky noises.

Damage:

• Common Infected deal more damage to the front than the back.
• All Common Infected can slow a Survivor on every hit.