Plague

Plague is a disease in OP-2.2 that can be contracted by interacting with certain infected mutants or their dead bodies. It's denoted by a biohazard icon in your HUD. In the early game, plague is annoying and devastating if caught, since you do not have much money to treat it. Later on, you will obtain enough protection and medicines to not care about it.
=== Sources of infection ===
The following mutants can give you plague:
* Plagued rats - bite, walking over the dead body (safe to walk over if they're still alive!)
* Plagued flies - bite
* Parasite zombies - ranged plague attack, searching the body (walking over is safe)
* Plagued zombies - ranged plague attack, walking over the body
=== Effects ===
Plague doesn't degrade your performance at first, but will lead to occasional psi damage and death in several hours if left untreated.
=== Treatment ===
You can cure plague with Serum, which can be obtained in the following places:
* bought from traders (for example the earliest merchant that sells serum is Adrenaline for 10000RU)
* occasionally dropped by Ecologists. You can get Serum for free from them by luring mutants to the scientific bunker at Yantar and letting them decimate the scientists.
* occasionally dropped by Clear Sky members. You can get free Serum from them by visiting the [ fishing hamlet] in Swamps from time to time. It's under constant attack by mutants, with lots of CS bodies to loot.
* received as a reward and found in random stashes.
If you caught the disease in Agroprom Underground during your first visit, Old documents: part 1 and Mole's PDA are probably the easiest sources in the early game besides paying 10000RU to Adrenaline. There is also a free Serum in a breakable crate in [ Cross' camp] in the Forgotten Forest.
=== Protection ===
You can completely avoid airborne sources of plague by using a suit with a closed loop breathing system, for example:
* any scientific suit
* Black Doctor Exoskeleton obtained at the end of the Black Doctor's exoskeleton storyline
* Don Quixote Exoskeleton obtained in Fenrir's lair at the Dump during the early Sniper storyline
* any of the nanosuits available in the game
and others. See the armor spreadsheet for the full list, there's a separate column for closed loop system.
The earliest scientific suit in the game is available after reaching Yantar, as a reward for saving Kruglov. (besides finding it in a random stash by chance). You can also get a better one for turning in 10 scientific medkits in Medkits for Fox instead of army ones.
There is no protection from plague rat or plague fly bites.
Category:Core mechanics