Mysterious disease

The Disease
The disease causes agressivity, orange glowing eyes, pale skin and claw-like hands. The victims act like wild animals, caring only about the food. They tend to have a horde mentality. The disease carries by bites. The blood of the infected is harmless and cannot carry the disease.

Stage 1
The victim starts being aggresive, attacking everything that moves. In earliest stages of infection, the victim is very durable, able to sustain injuries which would be fatal for a healthy human.

Stage 2
Victim's skin starts turning pale, eyes start glowing.

Stage 3
Victim's nails start getting sharper and victim starts using them as claws.

Patient zero
The first victim of the disease was Dr. Frederick Prezella. He was one of the members of the science team. He got isolated as soon as the disease in his body reached Stage 1. While he was being pacified, he bit one of the members of Liam Jones' team, infecting him with the disease. It started quickly spreading...

Cure
The cure has not yet been found.

Beginning of the outbreak
After an incident involving Dr. Frederick Prezella, the disease started quickly spreading. Most of the infected were in early stages and Arque was trying to solve this by sending their security force to kill the infected individuals. However unknowns to them, they were very durable in this stage and were only incapacitated.

They however did one mistake which became fatal. Instead of burning the incapacitated victims they sealed them in body bags. The victims regained consciousness and started attacking yet again. This terrified the Arque so much they started sending in "death squads".

Death squads
After the incident with improper elimination of infected, employees of Sokol-Glockner were tasked with doing the dirty job. A curfew was ordered and SG were slaughtering every single civillian who refused to comply and everyone who showed any signs of infection.

Present times
Death squads are still sweeping the island from infected, however with nearly no effectivity. Many infected are still roaming the streets and living in underground areas, cities formerly mostly populated by humans and even Arque installations.