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| Merck's Gardasil |
Merck ($MRK) and partner Sanofi ($SNY) can breathe easy: According to a new study, their blockbuster HPV shot Gardasil isn't linked to an increased risk of multiple sclerosis. In a study published Tuesday in JAMA, researchers found that in a population of 3.9 million girls and women, those vaccinated with Gardasil had lower rates of MS and similar CNS diseases. Story