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Jessica, a homeless heroin addict, shows her kit of clean needles, mixing cap and tourniquet in the Kensington neighborhood of Philadelphia, Pennsylvania, on April 14, 2017. | Dominick Reuter/Getty Images
Medicine

This New Heroin Vaccine May Offer Addicts a Path to Recovery

The vaccine, which has been tested on rodents and monkeys, works by triggering antibodies that neutralize heroin's effect on the brain.