Screamer

Fighting it

It has 70 health. What a swing actually takes off depends on your MELEE skill, what you are wearing and what you are buffed on, so the damage below is the weapon's own number, before any of that.

Weapon	Damage a hit	Swing
Katana	44	Fast
Sledgehammer	40	Heavy
Prestige 9mm	34	Heavy
Fire Axe	32	Heavy
9mm Pistol	30	Heavy
Rusty 9mm	28	Heavy
Machete	26	Fast
Lead Pipe	20	Heavy
Crowbar	17	Fast
Baseball Bat	15	Heavy
Chainsaw	14	Runs
9mm Smg	14	Heavy
Pump Shotgun	14	Heavy
Combat Knife	12	Fast
Jackhammer	11	Runs
Axe	6	Heavy
Pickaxe	5	Heavy

Where it shows up

Of the infected that wander in outdoors, about 0% are screamers by day and 0% at night.

How many infected each map keeps topped up outdoors (every extra co-op player adds 4):