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What to know about xylazine, the drug authorities are calling a public safety threat

A U.S. Drug Enforcement Administration badge. The DEA issued an alert warning of a "sharp increase in the trafficking of fentanyl mixed with xylazine" on Monday. (AFP via Getty Images)
A U.S. Drug Enforcement Administration badge. The DEA issued an alert warning of a "sharp increase in the trafficking of fentanyl mixed with xylazine" on Monday. (AFP via Getty Images)

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