CNN At This Hour With Berman and Bolduan August 19, 2015 15:57:00
Happening now, authority investigating a second likely case of the plague after a tourist visited yosemite national park. thats right, the plague. the same plague that killed millions centuries ago, perhaps you thought it was gone. its not. its rare but its still deadly. the park is now treating the campground with a chemical that kills fleas -- fleas spread the plague. cnns senior medical correspondent elizabeth cohen joins us now. elizabeth, the first obvious question is, really? the plague? >...
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