It's indicated Europe's Disease affects other forms of life besides humans. They also possess a strong dislike for the smell of garlic, and cannot stand sunlight or their reflection in mirrors. They will seek out blood to drink, and though they retain the ability to speak and even memories of individuals they knew pre-infection they will be weak and unintelligent creatures. Upon reanimation, the undead vampire will be a mindless, undead cannibal. In most cases, infected people eventually die from the disease, and after an unknown length of time the plague will reanimate the deceased victim's corpse as a vampire.
In rare cases, the plague could apparently turn infected people into vampires without killing them, such as was the case with Ruth Collins and her band of survivors - these living vampires were indistinguishable from the undead variant, save that they could be effectively restored to their human state by taking an injection. Once a living host is infected with Europe's Disease, they exhibit symptoms such as blindness.
Everyone except for the immune Robert Morgan was infected by the plague, and those who did not join together as a group who recieved treatment, died and returned to life as vampires. Europe's Disease, as its name suggests, originated in Europe, but was carried by the wind across the world in 1965.
