Patient Zero hates sleep. Sometimes she absolutely refuses it, moaning and growling in protest. Her growls are reminiscent of the sounds made by a Wookie.
She bites everything within her reach and has an insatiable appetite. Worst of all, she refuses to allow anyone near her to sleep, turning them into mirrors of herself.
And now she is mobile.
She is still fairly slow, so we have some hope of survival. Her speed can be deceiving however, because she has a surprising amount of tenacity. If I remain in one place for too long she will inevitably reach me. This has become one of her favorite pastimes. When she catches me she uses my clothes to stand and screams in triumph.
Thankfully, like other zombie variants, she still cannot climb stairs.