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Hillary Clinton Says #GrandmothersKnowBest When It Comes To Vaccinating Kids

This photo provided by Clinton spokesman Kamyl Bazbaz shows former Secretary of State Hillary Rodham Clinton, left, and forme
This photo provided by Clinton spokesman Kamyl Bazbaz shows former Secretary of State Hillary Rodham Clinton, left, and former President Bill Clinton, right with their granddaughter Charlotte Clinton Mezvinsky on Saturday, Sept. 27, 2014, at Lenox Hill Hospital in New York. The Clintons's daughter, Chelsea, gave birth Friday night to her first child, Charlotte. (AP Photo/Office of President Clinton, Jon Davidson)

Former Secretary of State Hillary Clinton dove into the Great Vaccine Debate this week with a tweet that left no doubt about where she stands.

Clinton, whose daughter Chelsea made her a first-time grandma four months ago, used the hashtag #GrandmothersKnowBest when she let it rip on Twitter.

Late last year, Clinton -- arguably the world's most powerful grandmother -- cited her "grandmother glow" as fueling her fight for gender equality around the world.

In the end, Clinton's tweet may have been more of a campaign ploy than anything. Even so, with 70 million grandparents in the United States, the hashtag is an obvious one -- especially for a savvy politician who soon may be "grandmother-in-chief."

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