"That's Doctor, actually." Mercer said, glancing at Rex. "As for the virus, I guess it was a Hunter that started it. I thought I saw one, but it must have cleared out for some reason. Don't know how it got here in the first place, probably the same way I did. These fellows can spread it through saliva or blood in an open wound..." He poked one of the infected with his foot. "But the Hunters can do it much more efficiently. Now that they've gotten away they'll start to produce hives, so it'll almost certainly go airborne before long. Long story short, this city is fucked. It'll spread even faster here than in New York, judging by the local militarie's abominable reaction time." As he spoke he looked around, appearing disappointed by the failure of the military to respond quickly.