Trump Order Cuts Childhood Vaccine List to 11
President Trump signed an executive order Monday reducing the recommended childhood vaccine list from 18 diseases to 11 and separating the combined MMR shot into three individual vaccines.

The Morning Brief Desk · August 11, 2026 · Based on reporting by AP News
President Trump on Monday signed an executive order that trims the number of diseases on the recommended childhood immunization list from 18 to 11, a departure from the schedule maintained by the Centers for Disease Control and Prevention. The order also breaks apart the vaccine that currently protects against measles, mumps and rubella in a single dose, directing that each be given as its own shot, according to AP News. In addition, it instructs that childhood immunizations be distributed across multiple doctor visits rather than administered together.
Medical groups objected quickly. The American Academy of Pediatrics labeled the measles-related change "dangerous," pointing out that measles infections are at their highest level in 35 years, BBC reported.
Criticism also came from inside the Republican Party. Sen. Bill Cassidy of Louisiana, who practiced medicine before entering the Senate, faulted the order and said the president lacks the expertise needed to alter the vaccine schedule, The Hill reported. His objection stands out as dissent from a member of Trump's own party rather than the opposition.
The context
The immunization schedule the order overrides comes from the CDC, which has recommended vaccines covering 18 diseases for children. Under that framework, protection against measles, mumps and rubella is delivered through one combined injection, and multiple vaccines can be given during the same appointment. The executive order changes both practices: fewer diseases covered, three separate shots in place of the combined MMR dose, and immunizations stretched over additional office visits. The material notes the order arrives while the country is experiencing its worst measles activity in three and a half decades, a figure cited by the American Academy of Pediatrics in its criticism. Robert F. Kennedy Jr. is named among the figures connected to the story, though the material does not detail his role in the order.
Why it matters
A federal directive rewriting the childhood vaccine schedule touches essentially every American family raising children, shaping which shots pediatricians recommend and how office visits are structured. The pediatricians' group has warned the MMR change is dangerous at a moment when measles cases have reached a 35-year peak, raising the stakes of any reduction in coverage or added complexity in dosing. The rebuke from Cassidy, a physician and Republican senator, signals the policy could face resistance beyond the usual partisan lines.
What’s next
How the order will be implemented remains to be seen, including whether and how the CDC's published schedule will be revised to match it. Watch for further responses from medical organizations, state health authorities and pediatric practices, and whether additional Republicans join Cassidy in objecting. Any legal or procedural challenges to the order have not been announced in the material available.
Sources
AP News — Trump to sign executive order on vaccine schedule
President Trump signed an executive order calling for spacing out childhood vaccines into separate medical visits and splitting the combined MMR vaccine into three different shots.
The Hill — Cassidy blasts vaccine order, saying Trump has no 'expertise to make these changes'
Sen. Bill Cassidy (R-La.), a physician, criticized the executive order splitting the MMR shot across three visits, signaling notable Republican pushback.
BBC World — Trump signs order to limit childhood vaccines and split MMR shots
The order recommends vaccines for 11 diseases instead of the CDC's 18; the American Academy of Pediatrics calls the MMR recommendation 'dangerous' amid a 35-year high in measles cases.
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