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CDC: HPV study reveals infections in teen girls have dropped

CBSTV Videos 2:10 mins

In a new study on the HPV vaccine, the CDC said infections among teen girls have dropped by more than half. HPV is the most common sexually-transmitted disease in the U.S., and it can cause cervical cancer. Dr. Carol Brown, a gynecologist at Memorial Sloan-Kettering Cancer Center, discusses the study with the "CBS This Morning" co-hosts.

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