False measles vaccine claims confuse many, KFF poll finds
REUTERS/SEBASTIAN ROCANDIO/FILE PHOTO
A sign reading “measles testing” is seen as an outbreak in Gaines County, Texas, has raised concerns over its spread to other parts of the state, in Seminole, Texas, on Feb. 25. Most adults and parents have read or heard false claims about measles and the measles vaccine, leaving many unsure of what to believe, a poll by the nonprofit organization KFF showed today.
FILE PHOTO: A sign reading "measles testing" is seen as an outbreak in Gaines County, Texas, has raised concerns over its spread to other parts of the state, in Seminole, Texas, U.S., February 25, 2025. REUTERS/Sebastian Rocandio/File Photo
Most adults and parents have read or heard false claims about measles and the measles vaccine, leaving many unsure of what to believe, a poll by the nonprofit organization KFF showed today.
The health policy nonprofit polled Americans on whether they had been exposed to three circulating false or misleading statements about measles.
Experts have said that the fight against rising measles cases is being hampered by a lack of forceful advocacy for vaccination by government health officials and by statements on unproven treatments that confuse parents.
A third of the 1,380 U.S. adults and parents polled by KFF have been exposed to the claim that receiving the measles, mumps and rubella (MMR) vaccine is more dangerous than becoming infected with the disease, marking an increase of about 15 percentage points since a poll conducted in March 2024.
This followed a March 11 interview on Fox News in which U.S. Secretary of Health and Human Services Robert F. Kennedy Jr. amplified a false narrative about MMR vaccine risks by claiming without evidence that the vaccine results in “deaths every year” and causes “all the illnesses” associated with disease.
Since taking the top job, Kennedy, who has a long history of advocating against vaccines, has backed the use of shots as the best way to prevent measles.
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However, he has also made misleading claims about nutrition and treatments, including vitamin A, which can help some children with malnutrition, but in high doses can cause liver damage.
Vaccine experts and physicians say that there are no effective drugs for measles, only treatments to manage its symptoms, and they assert that the vaccine is the only way to prevent infection. The measles vaccine is 93% effective after one dose and 97% effective after two.
About six in ten adults and 61% of parents surveyed say they have read or heard that the MMR vaccine causes autism, a claim that has been debunked by numerous studies.
Roughly a fifth of adults and parents have also heard the false claim that vitamin A prevents measles.
The poll’s results come amid one of the biggest measles outbreaks in the U.S. in the past decade, fueled by declining vaccination rates in parts of Texas and other areas of the country.
Less than 5% of adults surveyed think the three claims are “definitely true,” while fewer than half said they are “definitely false,” the poll showed.
However, at least half of the respondents expressed some uncertainty about whether to believe each claim, describing them as either “probably true” or “probably false”.
A large majority of adults, and 78% of patients, said they are very or somewhat confident that the vaccines are safe.
The survey was conducted online and by telephone among 1,380 adults from April 8 to 15.
