In "Quarantine," after the entirety of the apartment that news reporter Angela (Jennifer Carpenter) and her cameraman Scott (Steve Harris) have been staying in has been infected by the virus, the two make it up to the building's attic, that had yet to be explored. It is here that we learn that the virus was created by a former tenant of the apartment who was a part of a doomsday cult and broke into a military facility to steal a chemical weapon.
Not much else is revealed about the virus or its full intent outside of some sparse newspaper headline clippings that are posted along the wall. One of the most important pieces we can spot, however, is a headline that brings up how all life on a remote island was eliminated by what is called the Armageddon virus. No, it's not an homage to the 1998 Michael Bay disaster film. More than likely, the virus was released to wipe out some population, or possibly even all of humanity, which isn't too hard to imagine considering that it was locked away at a military facility. With just seeing how horrific the night in the apartment was for everyone trapped there, it's utter gut-wrenching to picture what it's affect would be like on the world over.
But another detail revealed in this section could reveal another possibility, if this came to fruition.