Stage One: Infection. Symptoms of zombie infection appear quickly: within one or two hours, the victim will develop a headache, fever, chills and other flu-like symptoms.
Stage Two: Coma. Zombie comas are brief . Physiological changes include: slow pulse and shallow breathing. The coma lasts only between four and six hours.
Stage Three: Transformation. Zombies awaken from their comas in a catatonic state. They are unresponsive to most stimuli as they shuffle about, trying to locate their prey. There is no acclimation period; a zombie will begin hunting immediately upon transformation.
Stage Four: The Party. Zombies converge in Sausalito on Saturday night to drink beer, dance, and laugh their asses off.