ZOONOTIC DISEASES are diseases caused by infectious agents that can be transmitted between (or are shared by) animals and humans.
http://www.vetmed.wisc.edu/pbs/zoonoses/

Zoonotic Diseases (Human)
Diseases that can be transmitted from animals to humans.
http://vetmedicine.about.com/od/zoonotic/Zoonotic_Diseases_H...

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Note added at 1 hr (2007-03-16 00:42:18 GMT)
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* A disease which can be transmitted between animals and people.
www.peteducation.com/dict_alpha_listing.cfm

* An infection that perpetuates amongst non-human animals and that cause disease in people.
www.solutions-site.org/reference/glossary.htm

* of or relating to or constituting zoonosis; "the Ebola virus is believed to be zoonotic"
wordnet.princeton.edu/perl/webwn

* Zoonosis is any infectious disease that can be transmitted from animals, both wild and domestic, to humans. The word is derived from Greek words zoon (animal) and nosos (disease). Many serious diseases fall under this category.
en.wikipedia.org/wiki/Zoonotic