Plague Inc. Wiki
Plague Inc. Wiki
General Information

The Parasite is an unlockable plague type in Plague Inc. and Plague Inc: Evolved. The parasite is the fourth plague in the Main Game, but in Cure Mode it is the third. On Plague Inc: Evolved, it is the fifth, Neurax Worm being the fourth.


Unlike other pathogens, the parasite and its style of life prevent it from passively gaining DNA points from infections and has a much higher starting Severity than usual.

Like the previous three disease types, Parasite has all the same Transmissions, Symptoms, and Abilities. Its unique Ability Symbiosis lowers its Severity, which is vital for it to spread far before the governments of the world notice it. It also gains a large number of DNA from orange bubbles, allowing it to improve its Transmission ability and the lethality of its symptoms.

Special Ability

  • Symbiosis 1-3: Makes the parasite more in tune with its respective host, so it gets harder to detect and cure. Symbiosis 2 and 3 also increase infectivity. Devolving these can cause heightened severity.


  • Unlike conventional parasites whose goal is to live off the host for as long as possible, Plague Inc's version of a parasite is more similar to a parasitoid, which eventually kills off its hosts.

Stages of Evolution

Standard Plague Types


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