Last week, the U.S. Centers for Disease Control and Prevention changed the language on a vaccine safety webpage , appearing to legitimize the long-disproven link between childhood vaccines and autism. The switch has sparked confusion and anxiety among parents, as experts say it's backpedaling on decades of scientific research and consensus.

“It goes against everything we’ve learned from countless peer-reviewed studies and the health data of millions of children,” Dr. Paul Offit, a pediatrician and director of the Vaccine Education Center at the Children’s Hospital of Philadelphia, tells TODAY.com.

The new language and its widespread media coverage have left many parents wondering: What changed? Has new research come out? Should I be worried?

Doctors tell TODAY.com the answer is clea

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