*73% of human-affecting 1,415 pathogens are zoonotic
*exclusions
**fish and reptile toxins
**allergies to vertebrates
**animal-derived food-borne
***eg. hep A
*zooanthroponosis = non-human to human
*anthropozoonosis = human to non-human
*amphixenosis = both direction between human and non-human
*orthozoonosis = perpetuated in nature by a single vertebrate species
**rabies (skunk in natural host), brucellosis, anthrax
*cyclozoonosis = requires more than one vertebrate species
**cestoda (tapeworm)
*metazoonosis = requires both of vertebrates and invertebrates
**all arboviral pathogens, some bateria (plague, rickettsia), some parasite (leischmania)