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Kaiser Permanente Study Shows Drug Effective In Preventing HIV
ABC News

More than 30 years after the AIDS virus was first discovered, a new study by Kaiser Permanente shows there may finally be an actual HIV vaccine.

More than 600 patients have been on the drug Truvada for about three years and none has tested positive for HIV.

The results of those clinical trials showed that Truvada was effective in more than 90 percent of patients. Since then, Kaiser Permanente in San Francisco has been giving the drug to its patients for more than two years with even better results.