I was going to mention this before because when i was reading again i realized Milton and his son were in the same hospital Kendrick was working in, and that maybe that was the origin of the virus (never imagine the kid was the patient 0). At the beginning when K and G were arguing, k blame everything on G, so I thought that they knew each other from work, and G was in the team behind the proyect and he chosse from the hospital the humans to test the virus (never imagine he create the formula) i really thought K knew G make him a chicken, but now after many chapter it doesn't seen like he knows something