In a single stroke, Health Secretary Robert F. Kennedy Jr. achieved a long-standing goal of his anti-vaccine supporters — and put millions of American children needlessly at risk. On Jan. 5, the Centers for Disease Control and Prevention said it is narrowing the childhood vaccine schedule — considered the baseline of care for all children — to 11 shots from 17. Some of the vaccines that Kennedy has criticized in the past remain, measles among them. Yet others such as the flu shot will be recommended only for some high-risk groups or after consulting with a doctor. The CDC’s announcement followed a White House memo last month that called for the agency to review vaccine practices in other rich nations. Although the administration has celebrated the change as “common sense” reform that aligns with global standards, the approach is deeply misguided. For starters, coordinating the U.S. vaccination schedule with international guidelines is overly simplistic. Not only are European countries smaller and more homogenous — putting them at lower risk for certain diseases — but the