A ground squirrel collected in Riverside County by authorities tested positive for plague bacteria. 

The squirrel was captured and tested last month at a campground north of Idyllwild, located in the San Jacinto Mountains in Southern California, reported CNN.  Routine tests are completed because the plague is endemic to the area. 

Plague is caused by the bacterium Yersinia pestis.  People can become infected with the plague by handling infected animals, or by being bitten by a flea carrying t...
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