Doctors worry that President Donald Trump’s new executive order on vaccines will stoke fear and confusion among parents at a time when measles is raging, immunization rates are falling and children are heading back to school.

President Donald Trump will sign an executive order on Monday focused on childhood vaccines, according to White House press secretary Karoline Leavitt.

The executive order would call for states to reconsider guidance for vaccine requirements for school

Explainer: Why Trump's childhood vaccine policy is sparking controversy-