the virus, runners, and shamblers.

Evening everyone, Havoc here - just writing this due to boredom (they're making me pull sentry duty in a green zone). Anyways, in the tense of 'know thine enemy,' I have become an expert on Zeke biology, so - to spread my knowledge - I'm writing a brief guide to zombies.
First- the Virus:
No, its not solanum. Solanum is a genus of plant life that includes tomatoes and eggplants.
in fact, Zombism is not even a real virus - at least not at first... and 'zombies' aren't really dead. You say, "Wait WHAT? not the living dead?" No, not the living dead. Not human anymore either.
Our biologists have examined the parasite that causes Zombism, and found that it includes DNA and long strand RNA from Leucochloridium paradoxum, a parasite that causes snails and slugs to leave the safety of home and get their eyes eaten by birds.
Spinochordodes Tellinii, a parasite that causes grasshoppers and crickets to go commit suicide into lakes.
Toxoplasma Gondii a protozoic parasite found in cats, mice and, occasionally, humans.

Piggybacked on this parisitic cocktail are the viruses necrotizing fasciitis, the flesh-eating disease; Hydrophobia, or rabies; and parts of the Ebola virus.

From what we can tell, the Ebola is a dormant strain used simply for its resistance to modern medicine.

And all this is grafted on to a cleaned set of human RNA.

now then, on to the different types of zombies-
first, note that there is only one strain of the zombie virus, which is Toxoplasim sanguis paradoxum. Runners are simply people who are immune to parts of the virus, usually an immunity to necrotizing fasciitis along with a thickened brain-blood barrier do the trick, this means that runners keep most of their facultys, EG: fine motor skills, hearing, sight, smell, tactical thought, Ect. it also means that they can be cured, as the parts of the virus that damage the brain can't get to it. like say for instance, Avalon was a runner, and she's human now, (exams of her blood show traces of antigens, hammerhead ribozyme, and ambidextrous amino acids.)

where as shamblers are completely infected, they can move fast, but they stumble, they have spotty vision, and no sense of smell. along with poor motor skills and no coordination, most people could easily out strip even the most athletic zeke. unlike runners, theres no point in trying to cure complete infection. as all that would come out of it would be a coma bound Vegetable.