Dr. Heidi Overton, President Donald Trump's nominee to lead the Food and Drug Administration, told senators on Thursday that the measles, mumps, and rubella vaccine is not lethal and is safe and effective. She answered at her confirmation hearing before the Senate Health, Education, Labor and Pensions Committee as the United States records its highest measles total in more than three decades.
Her answer contradicts the president's claim last month that the combined MMR shot is potentially lethal. Trump remarked without evidence while signing an executive order on childhood vaccines in the Oval Office, with Overton standing behind him. Her confirmation is not final.
For parents, the timing is practical rather than political. Many families schedule checkups and school shots in the fall, and they are hearing mixed messages from Washington. The person nominated to run the agency that licenses vaccines has now said on the record that the MMR vaccine is safe.
A Clear Answer on MMR, with Other Questions Left Open
Committee Chair Sen. Bill Cassidy, R-La., a physician, opened his questioning by asking whether the MMR vaccine is lethal. "The MMR vaccine is not lethal," Overton said. "It is safe and effective." She added that "every vaccine on the U.S. market right now is safe and effective according to the FDA," Roll Call reported. She also called the vaccine the best tool against the country's rising case count, according to ABC News.
Days earlier, Cassidy said on CBS News' Face the Nation that he needed to hear that Overton understands that "calling the measles vaccine lethal is absurd." At the hearing, he raised concerns about her role in the August executive order that overhauled the childhood vaccine schedule, saying the order was based on "zero" scientific evidence. The order suggests the MMR vaccine should be given as three separate shots.
Not every expert was reassured. Dr. Amesh Adalja, a senior scholar at the Johns Hopkins Center for Health Security, said in a statement that Overton played a central role in an order calling for separate shots that do not exist, without new evidence, and that her involvement raises questions about her scientific judgment.
On other topics, Overton was often evasive. She said she had "not seen any causal evidence that Tylenol causes autism," but declined to say whether the president was wrong about a link. On the abortion pill mifepristone, she said the drug meets FDA safety standards as labeled and noted an ongoing safety review. When pressed on agency independence, she repeatedly said she would follow the law. After the hearing, Cassidy declined to say whether he would support her or hold a vote on her nomination before the year ends.
The Measles Numbers Behind the Hearing
The hearing took place during the worst U.S. measles year in more than three decades. According to the CDC's measles cases and outbreaks page, 3,471 confirmed cases had been reported nationwide in 2026 as of Sept. 17, compared with 2,289 in all of 2025. There have been 39 new outbreaks this year, and 95% of confirmed cases are linked to outbreaks.
Pennsylvania has been the hardest-hit state. It reported 835 cases as of Sept. 23 and four measles-associated deaths, Reuters reported. The CDC's national count lists one measles-related death, and the agency has not said where it occurred. Health and Human Services Secretary Robert F. Kennedy Jr. has said only one of Pennsylvania's deaths resulted from measles, and the CDC is working with state epidemiologists on a standard definition for measles deaths. The gap reflects different counting methods and an unresolved dispute between state and federal officials.
Falling vaccination rates help explain the spread. CDC data show MMR coverage among kindergartners dropped from 95.2% in the 2019 to 2020 school year to 92.4% in the 2025 to 2026 school year, leaving about 280,000 kindergartners at risk. Two doses of the vaccine are 97% effective at preventing measles, and one dose is 93% effective.
Parents Weighing Fall Shots Face Mixed Federal Signals
The hearing did not change any vaccine recommendation. It did put a physician nominee on record defending the combined shot while the president has cast doubt on it.
The risk falls hardest on babies too young for their first dose, unvaccinated children and adults, pregnant people without immunity, and people with weakened immune systems. In communities with lower coverage, a single case can lead to exposures in schools, child care centers, and waiting rooms.
The most useful step for households is a records check. Parents can confirm their child's MMR doses through a pediatrician or their state immunization registry. Adults who are unsure of their own status can ask a clinician about testing or vaccination. Anyone exposed to measles should call a health care provider promptly and call ahead before visiting so staff can protect other patients.
Early measles symptoms include high fever, cough, runny nose, and red, watery eyes, followed by a rash. A young child with trouble breathing, confusion, or signs of dehydration needs urgent care. Families with cost concerns can ask their local health department about low-cost clinics or the federal Vaccines for Children program.
Confirmation Still Pending as Senators Weigh Independence
Overton's path is not settled. The committee must vote on her nomination before the full Senate can confirm her, and Cassidy, who is leaving the Senate early next year, has not said when that vote will happen. Sen. Lisa Murkowski, R-Alaska, said she remains undecided. Kyle Diamantas has served as acting FDA commissioner since May.
MedicalDaily previously reported on Overton's selection to lead the FDA in August, when the central concern was an agency short on staff while managing active food outbreaks. Since then, she has been formally nominated, and the vaccine question has moved to the center of her confirmation.
Surgeon general nominee Dr. Nicole Saphier also told senators this month that the MMR vaccine is not lethal, and Cassidy said that answer earned his vote. Whether Overton's answer does the same is not yet known.
The CDC updates its measles count weekly. Until a committee vote, the most reliable guides for families remain two documented MMR doses and local health department exposure alerts.
Key Questions Answered
What did Heidi Overton say about the MMR vaccine?
At her Sept. 24 hearing, she told senators the MMR vaccine is not lethal and is safe and effective, and that every vaccine on the U.S. market is safe and effective according to the FDA.
How does that compare with the president's comments?
Last month, with Overton present, the president claimed without evidence that the combined MMR vaccine could be lethal. Her answer contradicted that claim, though she avoided directly criticizing the president on other issues.
Is Overton now the FDA commissioner?
No. The Senate health committee has not voted on her nomination, and the full Senate must also confirm her. Kyle Diamantas remains acting commissioner.
How many measles cases are there in 2026?
The CDC reports 3,471 confirmed cases as of Sept. 17, 2026, the most in more than three decades.
Has the recommended MMR schedule changed for my child?
Families should confirm current recommendations with their pediatrician. CDC data show two doses are 97% effective at preventing measles.
What should I do after a measles exposure?
Call a clinician promptly and call ahead before visiting so staff can take steps to protect other patients.
Who faces the highest risk from measles?
Infants too young to be vaccinated, unvaccinated people, pregnant people without immunity, and people with weakened immune systems.
Published by Medicaldaily.com
