Researchers predict that climate change is going to shake up where animals live, abetting the exchange of more infectious viruses than ever before—and all in dangerous proximity to humans
Most infectious diseases in humans start out in another animal. Three out of four new or emerging diseases in people come from animals, as well as six out of every 10 infectious diseases known to infect humans,The reason for this is simple: As we interact with our environment and all the living things in it, we’re bound to be exposed to zoonotic diseases—illnesses spread from animals to humans—whether we like it or not.
“There’s some evidence that warming may be contributing to more malaria in places like the highlands of East Africa and the Andes in South America because mosquitoes are able to live higher on mountainsides,” Bernstein said. “But there has been, and continues to be, a lot of concern about how climate change might affect the movement of pathogens from one animal to another or from an animal to a person.
“We [found] disproportionately these are settled areas that are full of people like lots of urban and underdeveloped areas will be experiencing these novel encounters that will have been driven by past climate change,” Gregory Albery, an infectious disease ecologist at Georgetown University and co-author of the new study, told reporters at a press conference Wednesday. “And it’s also happening in croplands more than expected compared to all these sorts of much wilder areas.
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