Acute Encephalitis is a symptom which appears in the Necroa Virus and Neurax Worm DLCs, as well as the Smallpox scenario. It causes lesions in the brain, left|thumb|73x73px|Neurax Worm's icon. which causes lethal brain damage. This is not to be confused with the Nipah Virus-unique Encephalitis.
Surprisingly, Acute Encephalitis in Necroa Virus is only slightly severe.
|Symptoms in Plague Inc. and Plague Inc: Evolved.|
|Symptoms ● Symptoms (Neurax Worm) ● Symptoms (Necroa Virus) ● Symptoms (Simian Flu) ● Symptoms (Shadow Plague)