Several Democratic-led states say they will not adopt recent federal changes to the childhood vaccine schedule, instead continuing to rely on guidance from other medical groups that say there is no scientific justification for altering long-standing recommendations.
The dispute reflects a widening and unprecedented partisan divide over vaccine policy, as the Trump administration moves to revise federal guidelines to align with priorities set by Health and Human Services Secretary Robert F. Kennedy Jr., a longtime skeptic of U.S. vaccine policy.
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