HNDV

Human Neuro-Decomposition Virus (HNDV, also known as Purgatory Syndrome, Red-Dead Eyes Virus, and codenamed Mu during its development) is a man-made RNA virus that was developed by Seiyaku Pharmecuticals, and whose development was watched over by Dr. Peyton Connors.

HNDV targets the victim's brain, where it kills off the neurons. The virus itself kills its host ranging from a couple of hours to several days Symptoms include increased agitation, extreme hunger and thirst, increased sexual activity, paranoia, sudden compuslive hoarding, and narcissism. In the final stages of infection, the sclera will redden. After this symptom manifests itself, the infected individual will die within the hour from total liquification of the brain.
HNDV works in three stages. The first is the initial infection, where it begins to duplicate itself within the infected's neurons. The second stage is where the symptoms begin to be observed. It is this stage that the virus has infected around 50% of the infectee's gray matter. In the final stage, the cerebral structure is around 95% infected, and parts of the brain begin to break down. Once the victim reaches the final stage, death is guaranteed.

It should be of note that a very small percentage of the population has a natural resistance to the virus. Those with this resistance will have their infections ceased midway through the second stage. In this 'sedated' state, the infected individual begins to show signs of psychopathy as well as one of HNDV's symptoms. So far, only two cases of resistance has been recorded.

The virus' alternate names comes from the symptoms shown by infected individuals. The most notable is 'Purgatory Syndrome' due to the fact that only one of the virus' symptoms manifesting itself in its infected (excluding the reddening of the sclera). Each of these symptoms has been observed by many as being similar to matching one of the "seven deadly sins" described by the poet Dante in his legendary poem.