Necroa Virus DLC. It causes surges of testosterone, causing increased muscle mass and weight. Evolving this alongside the symptom Bone Dysplasia will unlock the Tank symptom combo.
|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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