Animal Infections That Spill Over Into Humans

The World
Everyone remembers the swine flu pandemic of 2009. Swine flu, along with AIDS and SARS make up a group of diseases called zoonotic diseases, or diseases that have jumped into humans from animals. And such diseases may be on the rise, according to a new book called "Spillover: Animal Infections and the Next Human Pandemic." I spoke with the author, David Quammen, for my new science podcast.
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