A space-suited Carter, Henry, and Tess remove the computer's motherboard from the ship. The biological component of it is all burned out and looks a lot like Lieber did. Sure enough, a quick scan from Henry's magic wand says it has the virus and thus must be the source. It spread to Zane when he accessed it through his organic computer and didn't use protection. He should have known better. Everyone knows you don't plug into a computer you don't know without practicing safe typing. As for Lieber, Carter says, he's had an organic computer for years. Henry says an older model would be more susceptible to an attack, and could have spread to Lieber's computer through the network ... which means it won't be long before the rest of the organic computer users start showing symptoms as well. And that's 200 people. Even for GD's mortality rate, it's a lot.
The GD sickbay is now full of nerds. Allison tells Carter and Tess that Zane has two hours before another seizure, and she's not sure if they'll be able to save him this time. Carter and Tess have rounded up all organic computer users and quarantined all of the computers, but 69 people (heh heh heh) are showing symptoms already. The good news, Allison says, is that people who don't own or use organic computers shouldn't be affected. And with that, Carter notices a small lightning bolt shooting out of his hand and towards a nearby lamp. Also, a computer monitor next to it is shorting out.
"We're all infected!" Henry says. He really is the bearer of good tidings this week, isn't he? Yes, the virus is spreading between humans through touch via their electrical impulses. Well then, I think Henry and Allison need to be wearing spacesuits if they're going to hang out with Carter, don't you? Just because he has it, doesn't necessary mean that they do - yet! Allison says step one is to seal off the town and quarantine it from the rest of the world so that the entire West Coast isn't the first to fall victim to the epidemic. Step two is to tell Eurekans to stay indoors, which probably won't prevent them from getting it at all but will make them feel like they have some kind of protection. Carter asks how long they have before the entire town is infected. Henry guesses about twelve hours. Carter remembers that Kim tested negative for the virus before, which means she must be immune to it. Henry says it's possible that the original computer wrote an immunity to the virus in its code when it created Kim to protect her from the same fate. Curing diseases and making organic computer people out of skin cells but not seeing fit to warn about said diseases or make a way for the information the organic computer people hold to be easily and quickly downloaded? That original ship's computer is a brilliant asshole.