What a rabbit plague can teach humans about coronavirus

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Millions of rabbits have died in Europe, Asia, and Australia due to rabbit hemorrhagic disease (RHD).  Photo by Pixabay. 

Rabbits in Europe, Asia, and Australia have succumbed to rabbit hemorrhagic disease (RHD). Millions have died. Now RHD is spreading in the U.S. The effort to stop RHD from spreading here is a window into the complicated politics of vaccine development.