“I’d love that idea, if I thought it was anything but a pipe dream.” We all turned toward Maggie. She’d moved to sit on the floor next to Joe, one arm slung lazily across the dog’s back. She looked completely at peace, despite the fact that she was leaning against an animal that could take off her face with a single bite. “People laugh at me because I watch a lot of horror movies, but horror movies are educational, if you know how to pay attention to them. They tell you about societal trends—about the things that people are afraid of. In the ones before the Rising, they were afraid of actual things. The new ones… they’re just afraid of not being afraid.”

Kelly snorted. “No one makes horror movies anymore.”

“Yes, they do,” said Maggie. “These days, everything’s a horror movie.”

“To get back to the original point, before we went on this fascinating and informative tangent, you said the virus was adapting,” said Alaric. He leaned forward, eyes fixed on Kelly. The Newsie in him sensed blood in the water. I could see it in his face. “No mob behavior, then, mob behavior. What are the reservoir conditions supposed to do?”

“No one really knows.” Kelly stole a glance in my direction, testing my reaction, before focusing on Alaric. She sounded less like she was lecturing and more like she was trying to make herself understood, like it suddenly mattered that we understand. “We think they stem from exposure to the live virus that somehow fails to cause full amplification. You see it mostly in people who risked exposure when they were under the threshold weight, although there have been exceptions. We’re still trying to figure out what causes the exceptions. Why it happens in some adults, and not in others. We don’t really know yet, and it’s not the sort of thing you can easily test.”

“So wait,” said Becks. “Are you saying that people who got exposed when they were really little, they get reservoir conditions instead of getting the whole zombie combo pack?”

Kelly nodded. “Exactly.”

My eyes were normal until I was almost at the amplification threshold, said George thoughtfully. The retinal distortion didn’t kick in until then.

“I know,” I mumbled, keeping my voice low, so as to hopefully avoid reminding my team that I was crazy. Louder, I asked, “What does that mean, exactly?”

“It means their bodies were exposed to live Kellis-Amberlee when they were still incapable of suffering the full effects of the virus,” said Dr. Abbey. There was a lunatic good cheer in her voice, like being allowed to make that statement was a great and glorious gift. “Ever hear of chickenpox?”

“Well, yeah,” said Becks. “It’s part of the standard set of field vaccines.”