Doctors Say Trump's Vaccine Order Will Scare Parents and Put Kids at Risk

President Donald Trump signed a new executive order about childhood vaccines that is worrying many doctors across the United States. The order questions the safety of some vaccines and calls for changes to how and when children get their shots. Doctors say the timing is especially bad because measles is spreading fast, vaccination rates are already dropping, and families are getting ready for back-to-school checkups. Many medical experts fear the order will make more parents skip or delay vaccines that keep children safe.

Michigan pediatrician Dr. Molly O'Shea said many families are going through their back-to-school lists right now, and vaccines are part of that routine. She said putting the safety of vaccines in doubt at this moment is 'really unfortunate and ill-conceived.' Doctors across the country agree that the order sends the wrong message at the wrong time.

The executive order calls for splitting the measles, mumps, and rubella vaccine — known as the MMR vaccine — into three separate shots given at different times. Right now, those three vaccines are combined into one shot, and there are no separate versions available in the U.S. Trump's order tells the health department to come up with a plan to offer the separate shots. A White House spokesperson said this would give parents more choices, but doctors say there is no medical reason to split the vaccine up.

Dr. Paul Offit, a vaccine researcher at Children's Hospital of Philadelphia, said the recommendations from Trump and Health Secretary Robert F. Kennedy Jr. 'are just not science based.' Kennedy ran the country's health department and had been a leader of the anti-vaccine movement for years before taking the job. Offit said casting doubt on the MMR vaccine during a major measles outbreak is irresponsible. He warned that the main harm the order will cause is 'chaos and confusion' that leaves people unsure what they are supposed to do.

Before signing the order, Trump used the word 'lethal' to describe the current MMR vaccine. He said that when the three vaccines are given together, they 'could be quite lethal,' but when given separately, they seem safe. Doctors strongly rejected this claim. They said the MMR vaccine has been tested in many studies over many years and has been shown to be very safe, while the diseases it protects against are far more dangerous.

O'Shea added that giving the measles, mumps, and rubella vaccines together actually produces a better immune response than giving them separately. 'There's no value in separating them,' she said. The idea that splitting the vaccine improves safety is not supported by science or by how the immune system works.

Trump also brought up a long-debunked claim that childhood vaccines may be linked to autism. Doctors say this theory has been studied in dozens of careful studies around the world, and there is absolutely no link between vaccines and autism. Dr. Andrew Racine, president of the American Academy of Pediatrics, said the answer is 'unequivocally' no. Autism diagnoses have been rising for decades, but scientists say that is largely because the definition of autism has gotten broader and our understanding of it has grown.

The order is also creating confusion about which vaccines children should get and when. Earlier in Trump's term, Kennedy fired the government's vaccine advisory committee and replaced it with new members who created a more limited vaccine schedule. That new schedule covers 11 diseases, but a federal judge blocked it. The American Academy of Pediatrics continues to recommend vaccines for 18 diseases in its 2026 schedule, and O'Shea said that schedule was 'very well designed' to protect children as their immune systems develop.

Parents may worry about whether their insurance will cover vaccines if the schedule changes. However, doctors say coverage should not be a problem for most families right now. Medicaid and CHIP still cover the vaccines that were recommended before the current administration took office. Private insurance plans generally will cover them through 2027 as well.

Even so, many doctors fear that vaccine hesitancy — when parents choose not to vaccinate their children or delay shots — will keep growing. Federal data shows that vaccination rates among kindergartners have been falling, and the number of children with exemptions from vaccine requirements hit an all-time high in the 2024–25 school year. Experts worry that if children miss vaccines or space out their shots, they could get sick from a preventable disease between doctor visits.

Michael Osterholm, an infectious disease expert at the University of Minnesota, said parents deserve clear, science-based guidance — not competing advice driven by politics. 'When families receive conflicting messages, confidence in vaccination suffers, and children ultimately bear the consequences,' he said. Doctors say they expect to spend more time answering worried parents' questions, but they fear that confusion caused by the order may do lasting harm to public health.