"Ebola. Anthrax. Bubonic plague. HIV. SARS. Coronavirus. You may not be familiar with the term “zoonotic,” but these nightmarish examples fall into that category. Zoonotic diseases are the kinds that can jump the species barrier, and can be particularly dangerous to humans because our immune systems don’t yet know how to fight them. The COVID-19 outbreak in Wuhan, for example, probably originates from wild bats, but it’s not yet clear which creature was the intermediary between them and humans. Confiscated samples of pangolin, a critically endangered mammal hunted for use in traditional Chinese medicine, have tested positive for similar strains. Whether or not the intermediary turns out to be a rare, exotic species or a more mundane one such as pigs, one thing is clear: The greater the variety of animals in the same small space, the more pathways there are for diseases to spread and mutate. This is alarming because the risk of zoonotic disease is rising exponentially. Three-quarters of new diseases in humans are transmitted from animals. The past century has seen ever-expanding human encroachment into natural habitats, exposing people and livestock to more varieties of wild animal than ever before—and with this contact, any bacteria and viruses they carry. “The more we hunt wildlife, the more we come in contact with new environments and the more we increase the likelihood of us being exposed to these viruses,” explained Peter Ben Embarek of the World Health Organization’s International Food Safety Authorities Network. “It’s clear that poaching and hunting endangered species has to stop. It’s totally unacceptable. I think everybody in all authorities of the world are in agreement with that.”..."