ZOONOSIS

Any disease and/or infection that is naturally “transmissible from vertebrate animals to man” is classified as a zoonosis according to the Pan American Health Organization (PAHO) publication “Zoonoses and transmissible diseases common to man and animals”.
Anthropozoonosis is any cell-borne pathogen that is naturally transmitted from animals (mostly vertebrates) to humans, and vice versa. Some researchers define anthropozoonoses as diseases transmitted by humans to animals and zooanthropononoses as diseases transmitted by animals to humans – and when it occurs in a bidirectional manner and of equal magnitude it is called amphioxenosis – which in both cases is still a zoonosis.