President Donald Trump signed an executive order urging the separation of the measles, mumps, and rubella vaccine into individual shots, despite pushback from public health experts. Meanwhile, Trump’s FDA nominee Dr. Heidi Overton defended the MMR shot at a Senate hearing, calling it safe and effective.
Executive Order Targets Combined MMR Vaccine
President Donald Trump signed an executive order calling to “break up” the measles, mumps, and rubella (MMR) vaccine, a move that would scrap the standard two-dose regimen in favor of separate immunizations administered across multiple visits.
For example, at one year, you should have five separate visits for vaccines rather than getting them all in the same day,
President Trump said at the signing.
The directive also advises states and territories to consider updating vaccine laws and regulations. It directs the attorney general to take legal action against states with laws that violate religious freedom, disability accommodations, or parental authority. At least 23 states have stated they plan to follow immunization recommendations from the American Academy of Pediatrics, which continue to back policies predating the Trump administration.
Weeks after standing behind the president during the executive order signing, Dr. Heidi Overton told senators the MMR vaccine is safe and effective
during her confirmation hearing before the Senate health committee.
It is our best tool right now in the public health response to the measles outbreak,
Overton said, addressing the committee as the United States records its highest number of measles cases since 1991.
Asked by Sen. Bill Cassidy whether any vaccine on the U.S. market was unsafe, Overton answered directly.
“Every vaccine on the U.S. market right now is safe and effective according to the FDA.”
Dr Heidi Overton, FDA nominee
Cassidy, a Louisiana Republican and physician who chairs the committee, had previously called Overton’s involvement in the August executive order almost disqualifying
. When Cassidy questioned what she would do if asked by the president to alter those safety assurances, Overton stated she would offer her best advice while following statutory requirements for the FDA commissioner role.
Public Health Warnings and Regulatory Hurdles
Medical professionals have raised alarms regarding the push to separate immunizations. Public health experts note there are no data showing that spacing out childhood shots offers any benefit, warning that the practice increases infection risks, leads to missed doses, and drives up vaccination costs for families.
Logistical barriers also stand in the way of the administration’s proposal. Breaking up the MMR vaccine requires pharmaceutical manufacturers to produce three distinct shots, none of which are currently licensed in the United States or approved by the FDA.
None of this is reality-based,
Amesh Adlaja, a senior scholar at the Johns Hopkins Center for Health Security, said on Bluesky. It is all just nihilistic pandering to the anti-vaccine movement and will do nothing but lower standards of living for everyone.
Health and Human Services Secretary Robert F. Kennedy Jr. joined Trump at the executive order signing, where both repeated a long-debunked falsehood linking vaccinations to autism. Andrew D. Racine, president of the American Academy of Pediatrics, emphasized that the order does nothing to support families of autistic children, noting that pediatricians schedule immunizations based on when vulnerable immune systems respond best.
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