In an executive order, President Trump calls for fewer recommended childhood vaccinations and more spacing between shots. Medical experts warn the changes lack scientific backing and could leave children less protected.

President Donald Trump will sign an executive order calling for spacing out childhood vaccines into separate medical visits and splitting the combined measles, mumps and rubella…

President Donald Trump will sign an executive order on Monday aimed at reshaping the federal government’s approach toward childhood vaccines, according to a draft of the document…