symptom exclusive to the Christmas-themed Santa's Little Helper scenario. It makes hosts develop relationships via the manipulation of their adrenal cortexes, increasing infectivity and mutation chance.
|Symptoms in Plague Inc. and Plague Inc: Evolved.|
|Symptoms ● Symptoms (Neurax Worm) ● Symptoms (Necroa Virus) ● Symptoms (Simian Flu) ● Symptoms (Shadow Plague)
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