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Prairie Dog eats vaccine

Plague-Infected Prairie Dogs Cause Parks to Close Near Denver

Smithsonian — In late July, the United States Fish and Wildlife Service shut down the 15,000-acre Rocky Mountain Arsenal National Wildlife Refuge north of the city when fleas infected with the plague bacterium Yersinia pestis were found in the refuge’s black-tailed prairie dog colonies. “We are closing trails and spraying an insecticide to kill fleas in plague-affected areas where there might be humans.”

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