Former Secretary of State Tweets in support of vaccines for all children

Credit: Jon Davidson, Office of President Clinton

While the verdict’s still out on whether she wants to be commander in chief, Hillary Clinton is exercising her sway as “Grandmother in chief.”

The former secretary of state – and Grandma Hillary to Charlotte Clinton Mezvinsky, 4 months – took to Twitter Monday night to weigh in on the side of childhood vaccines.

“The science is clear: The earth is round, the sky is blue, and #vaccineswork. Let’s protect all our kids. #GrandmothersKnowBest,” Clinton Tweeted.

Clinton, who championed health-care reform when she was First Lady in the 1990s, was the latest political leader to weigh in on the vaccine-safety debate spurred by the measles outbreak in the U.S. that has infected, according to the Centers for Disease Control, 102 people in 14 states.

Earlier on Monday, New Jersey Gov. Chris Christie and Sen. Rand Paul – both Republicans and mentioned as possible 2016 presidential contenders, as well – made headlines with their own comments on vaccines.

Christie said his own children were fully vaccinated and called vaccines important to protecting public health. But, he added, “I also understand that parents need to have some measure of choice in things as well, so that s the balance that the government has to decide.”

Paul, a Kentucky ophthalmologist by training, waded even deeper into the debate on Monday when he repeated, in a contentious CNBC interview, scientifically dubious claims about vaccine safety.

In a separate, earlier interview, Paul said most vaccines should be voluntary.