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Anti-Smoking Vaccine Shows Promise

A nicotine vaccine called NicVax appears to be a safe, well-tolerated and potentially effective aid in helping people quit smoking, researchers find.

The 38-week study included 68 current smokers who received one of three different doses of the vaccine or a placebo. The study wasn't designed to evaluate the treatment effect of the vaccine, but the researchers did find that 38 percent of the people taking the high dose of vaccine quit smoking for at least 30 days.

"This result was an impressive and completely unexpected finding because the study was not focused on helping smokers quite smoking. In fact, to participate in the study, smokers had to attest that they did not have a planned quit date for the next six months," study author Dorothy Hatsukami, director of the University of Minnesota Cancer Center's Transdisciplinary Tobacco Use Research Center, said in a prepared statement.

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