Human-to-animal transmitted diseases?

[Crescent Pulsar S]

Over the years I've heard of diseases that affect animals mutating to affect humans, but I've never heard of the reverse happening. I've begun to wonder about it since it seems like humans are disease-ridden and new diseases are cropping up and mutating frequently enough, while animals don't seem to have to deal with nearly as many, or -- at least -- be at much of a risk by comparison. It would just seem strange if it was mostly (or totally) one-way, since interaction precludes a sharing of contact, and it would be the humans with the potential to protect themselves from said contact.

[Spica75]

Nah, it´s just not as dangerous to humans so it´s not big headline news.

http://journals.plos.org/plosone/articl ... ne.0089055
Findings

In these publications, 21 (38%) pathogens studied were bacterial, 16 (29%) were viral, 12 (21%) were parasitic, and 7 (13%) were fungal, other, or involved multiple pathogens. Effected animals included wildlife (n = 28, 50%), livestock (n = 24, 43%), companion animals (n = 13, 23%), and various other animals or animals not explicitly mentioned (n = 2, 4%). Published reports of reverse zoonoses transmission occurred in every continent except Antarctica therefore indicating a worldwide disease threat.

http://www.virology.ws/2009/04/08/rever ... r-animals/
An example of a reverse zoonosis occurred just last week at Lincoln Park Zoo in Chicago, where a 9 year old chimpanzee died of respiratory disease caused by human metapneumovirus.

https://en.wikipedia.org/wiki/Anthroponotic_disease
Many human diseases can be transmitted to other primates, due to their extensive biological similarities. As a result, centers that hold, treat, or involve close proximity to primates and some other kinds of animals (for example zoos, researchers, and animal hospitals), often take steps to ensure animals are not exposed to human diseases they can catch. In some cases animals are routinely immunized with the same vaccines given to humans.