Sanofi-Aventis (France), VaxGen, Inc. HIV Vaccine Shows Promise for First Time, Study Shows Published: Sep 24, 2009 Bloomberg -- An experimental vaccine prevented HIV infections for the first time, a breakthrough that has eluded scientists for a quarter century. Related links Bloomberg This will open in a new window CNN This will open in a new window Fox News This will open in a new window Email this Facebook Twitter LinkedIn Pinterest Reddit Back to news