A Zombie Pathogen is the general term for a mutagenic pathogen capable of turning people into zombies, they can manifest as different types of Pathogen such as Viruses, Bacteria or even Pathogenic Fungus, though they all have common traits in many cultures.
Common Features
Typically, a Zombie Pathogen, regardless of it's type is portrayed as a blood-borne disease capable of being most commonly spread though bites, but also can be spread though other means (see below).
Zombie Pathogens are not often, portrayed as airborne or vector-borne, though their virulence is sufficient enough to push humanity to the brink of extinction, due to their undead carriers strength and terrifying demeanour leading to a panic.