Almost immediately, a small message popped up in the corner of the screen—the scope had found a “partial match” to something in its database. Kira shook her head. No pun intended, right, microscope? A moment later another one popped up, then two more, then four more, partial match after partial match. Kira pulled up the image and found a bizarre protein construct, completely new and yet, like the scope said, very familiar. She peered closer. There were dozens of matches now, climbing swiftly toward the hundreds. Something in Samm’s breath looked very similar to—but not exactly like—the RM Blob. Kira’s fingers flew across the screen, magnifying the image, rotating it, pulling it apart. It was remarkably close to the blood-borne version of RM—a similar size, a similar shape, even some of the same nodes and receptors on the surface. It wasn’t exactly RM, but it was close enough to make Kira shiver. The few small differences were the most terrifying part, because they meant it was new. A new strain of the virus, perhaps.

And Samm was breathing it out.

Kira looked up at the ceiling, moving her eyes from corner to corner. She thought about calling out, or just running out of the room, but she paused. I need to think this through. First of all, she wasn’t sick; she had no symptoms, no discomfort, no signs of any pathogenic attack. She peered closer at the screen, studying the object: It looked like RM, but it didn’t look like a virus. A virus would have a core particle in its center, a little packet of genetic information that entered a host cell and corrupted it, but the thing in Samm’s breath didn’t have one. She searched it carefully, using her fingers to peel back the layers of the image, examining the structure in detail. As nearly as she could tell, this new particle didn’t have any way of reproducing itself. It was like a nonvirus version of the virus.