President Donald Trump has signed an executive order aimed at increasing “vaccine flexibility and research,” a move that includes a directive to split the standard measles, mumps, and rubella (MMR) vaccine into three individual shots administered at different times. Speaking from the Oval Office, Trump suggested that while the combined vaccine might be “lethal,” separate doses could prove safer and equally effective.
Medical experts emphasize that the MMR vaccine is not lethal and that there is no scientific evidence supporting the health benefits of separating the components. On the contrary, health professionals warn that splitting the shots increases pain for children, extends the period during which they remain unprotected, and ultimately reduces overall vaccination rates. Furthermore, manufacturers do not currently produce standalone measles, mumps, or rubella vaccines for routine use in the United States.
This directive follows a previous attempt by the administration to reduce the childhood vaccine schedule from 18 to 11 vaccines, a move that was blocked by a federal judge in March. Dr. Michael Osterholm, executive director of the Vaccine Integrity Project at the University of Minnesota, criticized the order, stating that parents should rely on evidence-based guidance from established medical bodies like the American Academy of Pediatrics rather than political processes.
Osterholm noted that the executive order does not alter the decades of scientific data and clinical trials that support current immunization practices. The administration’s approach to vaccine policy has been heavily influenced by Health and Human Services Secretary Robert F. Kennedy Jr., who has previously linked vaccines to autism and announced plans to revise the national immunization schedule earlier this year.
The administration’s efforts have faced significant pushback. In January, Dr. Andrew D. Racine, president of the American Academy of Pediatrics, labeled the proposed changes to the immunization schedule as “dangerous and unnecessary.” Additionally, Kennedy replaced all 17 members of the CDC’s expert vaccine panel with individuals known for their skepticism toward vaccines and COVID-19 mandates.
Legal challenges have also stalled these policy shifts. In March, a federal judge ruled that proper scientific procedures were not followed, leading to the suspension of 13 new members Kennedy appointed to the CDC’s Advisory Committee on Immunization Practices (ACIP) and the voiding of their prior votes. The ACIP had previously voted to stop recommending the MMRV combination vaccine for children under four.
Despite these controversies, the administration continues to pursue a realignment of U.S. vaccine policies. Two months after the initial court block, Trump signed an order directing federal agencies to align the childhood vaccine schedule with recommendations from peer nations.
Addressing the public on August 10, President Trump stated that parents retain the choice to provide their children with all recommended vaccinations, adding that these services will remain covered by insurance.
Trump issued his order months after trying to slash the childhood vaccine schedule from 18 to 11.
Kennedy also removed all 17 members of the Centers for Disease Control and Prevention’s expert vaccine panel and filled many of the positions with people who have been vaccine skeptics or questioned COVID-19 vaccine mand
In addition to votes on the hepatitis B and COVID-19 vaccines, the ACIP voted to no longer recommend the MMRV vaccine, a combination vaccine that targets measles, mumps, rubella and varicella (chickenpox) for children yo
That data has been built over decades – through large clinical trials, real-world effectiveness studies and continuous safety monitoring involving millions of children.”