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Dr. Bruce Walker, a Harvard Medical School professor said, "This is the first time that there's been a tool that women can use to protect themselves from becoming infected, "It's a game changer."
After two decades in which researchers searched fruitlessly for an effective vaginal microbicide to block H.I.V., South African scientists working in two AIDS-devastated communities of South Africa, one rural and one urban, say they have finally found something that shows real promise.
