The president’s order references a scientific assessment by the Department of Health and Human Services issued earlier this year.
President Donald Trump signed an executive order on May 29 directing agencies to align with a scientific assessment that recommended fewer childhood vaccines.
Trump’s order references a scientific assessment by the Department of Health and Human Services (HHS) that compared U.S. childhood vaccine recommendations with those of other developed nations.
The study, issued in January, found that “the United States currently recommends more childhood vaccines than any peer nation, including more than twice as many vaccine doses as some European nations,” it stated.
Under Trump’s order, all executive departments and agencies must ensure that regulations on child and adolescent immunization “align with the schedule” recommended by the Advisory Committee on Immunization Practices (ACIP), while also ensuring that Americans retain their current access to vaccines.
The order also directed the U.S. Centers for Disease Control and Prevention and its vaccine advisory panel to review the assessment and the latest clinical data and take steps to update the U.S. childhood vaccine schedule.
It stated that the review should explore ways to give parents and doctors greater flexibility in the timing and sequencing of the administration of routine immunizations.
“It is the policy of the United States that the core childhood vaccine schedule should be aligned with scientific evidence and best practices from peer, developed countries while preserving access to vaccines currently available to Americans and that the Federal Government will continue to protect religious freedom and enforce all legal protections for parents,” the order said.
Following the assessment, the CDC issued a revised childhood vaccine schedule in January that ended broad recommendations for vaccines against rotavirus, influenza, meningococcal disease, hepatitis A, and hepatitis B.
The agency said in a Jan. 5 memo that decisions for those vaccinations should instead be made through “shared clinical decision making,” which involves discussion between parents and healthcare providers.
The changes were made after Trump signed a memo in December 2025 directing the HHS and CDC to review U.S. vaccine schedules and compare them with those of peer countries. He named three countries—Denmark, Japan, and Germany—that recommend fewer vaccines and fewer vaccine doses.
