I'm surprised no one has said Rabies yet.
Pros
- 1-3 month incubation time (time from infection to turn)
- Agitation + Anxiety + Confusion + Paranoia + Hallucinations + Insomnia (= aggressive + tired)
- Fear of water (hydrophobia) because of the difficulty in swallowing (won't swim)
Cons
- Not very infectious (mutate to transmit via bite)
- Death soon after turning (3-10 days, mutate this to be less lethal)
Rabies is probably the closest thing to a zombie virus that currently exists. There was even a documentary (forgot show name) about how Rabies could cause the zombie apocalypse if it just mutated to be transmittable via bite.
