Environmental
Someone in the area has been infected with the Grey for longer than three days. The area surrounding them is now losing natural vitality and attracts more Grey carriers. The area starts 10 yards/meters square around your resting place, multiplying in size by two each day. This area remains Greyed Out even if the person who caused it dies.
Effect: The temperature rises to a muggy, humid level. Mosquitoes, midges, and other bugs carrying the Grey arrive in droves. Anyone else who rests within the Greyed Out area contracts the Grey Condition (see p. 281).
Ending the Tilt: Demons might repair the Infrastructure in a Greyed Out area to appease the God-Machine and convince it there’s no infection to fear, or angels could be convinced to do so. If all local victims of Blightfang are eliminated or cured, the God-Machine may reverse the Grey. Vectors can be used to treat regions and individuals infected with the Grey in the same way they’d treat Contagion.