President Trump signed an executive order Monday calling for reducing the list of vaccines all children must get from 18 diseases to 11, and splitting the combined measles-mumps-rubella vaccine into three separate shots given at separate visits. Health Secretary Robert F. Kennedy Jr. was at the signing. Trump said the combined vaccine "could be quite lethal" without evidence, and linked the schedule to rising autism rates — a claim that has no scientific support. The order also directs the Justice Department to challenge state laws that don't allow religious or medical vaccine exemptions. A federal judge already blocked an earlier administration attempt to change the vaccine schedule in March, finding it "likely arbitrary and contrary to law."

1. Other Countries Vaccinate for Fewer Diseases — and Do Fine (Trump, Robert F. Kennedy Jr., MAHA)

The administration says America's vaccine schedule has never been rigorously compared to what peer countries require, and it's overdue.

The U.S. outpaces every peer country on childhood vaccines. A December 2025 HHS assessment found the schedule includes more than twice as many doses as some European nations. The White House says peer countries maintain high vaccination rates through public trust — not mandates — and the U.S. should do the same.

Seven shots move from universal to shared decision-making. Flu, COVID, and hepatitis B vaccines would no longer be automatically recommended for all kids — parents and their children's doctors would decide together. Calley Means, an HHS senior adviser, described the policy shift in one line: "Gloves are off."

Chronic disease rates in kids are what's driving this. RFK Jr. and the MAHA movement argue that rising rates of autism, ADHD, and autoimmune disorders in children correlate with an expanding vaccine schedule. They say the connection has never been seriously investigated — because the health establishment is too close to pharmaceutical companies.

2. But Doctors Say This Will Make a Record Measles Year Worse (American Academy of Pediatrics, Dr. Andrew Racine; Sen. Bill Cassidy, R-LA)

The medical community says the autism claim is false and the timing is the worst possible.

The autism-vaccine link doesn't exist. Dozens of studies involving millions of children have tested it — and never found it. Dr. Andrew Racine, president of the American Academy of Pediatrics, said the order "will do nothing to support families of children with autism or advance understanding of it." The autism rate increase is better explained by improved diagnostics.

Measles cases are at a 35-year high. The U.S. confirmed more than 2,300 measles cases in 2026 — the most since the country declared measles eliminated in 2000. A U.S. expert committee will meet this month to review whether the country should lose that elimination status, which it has held for 26 years. The definitive PAHO ruling comes in November. Racine called the timing "not only disheartening but dangerous."

Splitting the MMR isn't possible right now. Single-disease measles, mumps, and rubella vaccines don't exist in the U.S. market. Merck discontinued them in 2009. Bringing them back would require clinical trials and FDA approval — a process that could take a decade. Dr. Jake Scott, a Stanford infectious disease specialist, noted that monovalent vaccines historically have lower completion rates than combination shots.

More visits means fewer kids finish the series. Children who currently get all recommended shots in one appointment would need five or more separate visits under the EO's logic. Families with transportation challenges or inflexible work schedules are most likely to fall behind — and most likely to be unvaccinated against preventable diseases.

The one Republican breaking ranks is also a doctor. Sen. Bill Cassidy (R-LA) said: "I'm a doctor. This executive order is wrong. The President does not have the expertise to make these changes. Vaccines are overwhelmingly safe. Vaccines are effective. Vaccines DO NOT cause autism."

Where This Lands

Trump and RFK Jr. argue that parents and doctors should make the call on non-core shots, not a federal committee, and they see a U.S. schedule that outpaces every peer country as evidence the system needs reform. Doctors counter that the schedule rests on decades of science, and that pulling flu and hepatitis vaccines from universal recommendation will cost children's lives — especially while measles, already at a 35-year high, hasn't been eliminated yet. Courts blocked a similar schedule change in March; legal experts expect this EO to meet the same fate. But vaccination rates can fall long before any lawsuit resolves.

Sources