The United States has held measles elimination status since 2000, a milestone that required fewer than one case per ten million people and vaccination coverage above 95 percent. Both are now in doubt. This year, 2,371 confirmed cases put the US on pace for its worst measles year in three decades, with 31 active outbreaks. South Carolina recorded 997 cases — the largest single-state cluster in modern history — before health officials declared it over in April. Utah is now the fastest-growing front, with nearly 700 cases, many in a community where the kindergarten exemption rate hits nearly 20 percent. The Pan American Health Organization will review the US's elimination status this November. CNN's Dana Bash asked Kennedy directly whether he accepts responsibility for the surge. He said, "Absolutely not."

Doctors Say Kennedy's Anti-Vaccine Posture Enabled This

The pediatrics establishment holds that declining vaccination rates — not bad luck — caused the outbreak, and that Kennedy's rhetoric made them worse.

Dr. David Hill of the AAP put it plainly: Kennedy shares blame. Hill, speaking before a Senate panel, told lawmakers that the math is straightforward. "When 95% of the population is vaccinated, sporadic cases from outside the country don't spread as they are doing now," he said. His conclusion: "Anyone who is spreading misinformation about the safety or effectiveness of measles vaccine shares in the responsibility for these outbreaks."

Dr. Paul Offit, CHOP vaccine director, says Kennedy drives hesitancy. Offit, a former ACIP member who helped develop the rotavirus vaccine, described Kennedy as "an anti-vaccine activist" who "scares people about vaccines, which only causes them not to get them." As South Carolina's outbreak climbed past 1,000 cases, Offit noted that Kennedy "says nothing as these cases continue to mount" — and that at that scale, "you're again talking about children being at risk of dying."

Utah pediatrician Dr. Nathan Money says he feels helpless. "This train is going in the wrong direction," Money told KFF Health News, "and it can feel like a helpless situation, because we're just not seeing the public messaging and leadership that's needed." Former Utah epidemiologist Angela Dunn identified the enabling conditions: disinformation, pandemic trauma, and gutted public health budgets created what she called a "perfect storm."

The vaccination data trace a direct line. MMR coverage fell from 95.2 percent in 2019-2020 to 92.5 percent nationally in 2024-2025 — below the herd immunity threshold. Families claimed exemptions for a record 3.6 percent of kindergartners. Unvaccinated or unknown-status individuals account for 93 percent of all 2026 measles cases.

Kennedy Says COVID Broke Vaccination, Not His Leadership

Kennedy told CNN he recommends the MMR vaccine and argues COVID lockdowns explain low vaccination rates — not anything his department has done.

Kennedy's defense rests on a global comparison. On CNN, he argued that the US is not uniquely failing: Mexico has "15 times the amount of measles per capita," Canada has "four times," and England has "two times." His broader argument is that pandemic-era school closures and vaccine hesitancy tied to COVID shot mandates broke trust in vaccines nationwide — a problem he inherited, not created.

Kennedy says he recommends MMR vaccination while opposing mandates. Pressed by anchor Dana Bash, Kennedy told viewers directly: "Parents should get their children vaccinated for measles." His position since taking office is that vaccination should be a parental choice, not a federal requirement. At Senate hearings, he repeated that his department is "not responsible" for the outbreak and that "the whole world had their worst measles year."

A Forbes physician fact-checked Kennedy's international comparisons and called them misleading. Canada's elevated rate stemmed from a specific immigrant community cluster rather than a systemic policy failure comparable to the US. The same physician said Kennedy had the age-risk claim backwards: measles is most dangerous to children under 5 and adults over 20, not to those in between. Kennedy's allies at Children's Health Defense argue the prior ACIP was industry-captured and that his reforms restore scientific integrity rather than undermine it.

Parental Rights Advocates Say Mandates Cross a Constitutional Line

In states with high exemption rates, communities frame vaccination requirements as government overreach into medical and religious freedom.

Utah is the sharpest test case. The state allows both religious and philosophical exemptions — 84.1 percent of Utah's exemptions are personal or philosophical while 12.6 percent are religious. The cluster of cases in the Southwest Health District centers on a Fundamentalist Church of Jesus Christ of Latter-Day Saints community with historically low vaccination rates and nearly 20 percent kindergarten exemptions. State officials have not moved to eliminate philosophical exemptions.

States are split on the policy. California, Connecticut, Maine, and New York eliminated non-medical exemptions years ago, and their outbreak intensity has been substantially lower than in states that kept philosophical or religious opt-outs. Stateline's analysis found that states which expanded exemptions saw declining vaccination coverage even in counties that previously led the country. Aaron Siri, the vaccine litigation attorney who helped vet Kennedy's ACIP appointments and joined internal HHS policy meetings by speakerphone, has built his practice around the legal protection of vaccine choice claims.

Thirty-plus states still allow non-medical exemptions — and the share keeps rising. More than half of US counties have seen exemption rates grow since 2020. Kennedy's HHS removed six vaccines from the universal childhood recommendation list in January 2026, bypassing the ACIP expert panel — a federal court blocked those changes in March, but the legal standoff has kept the advisory committee from meeting.

Where This Lands

The November PAHO review will settle one empirical question: whether the US formally loses the measles elimination status it has held since 2000. The scientific fight over causation is already settled in the data — states that eliminated non-medical exemptions have dramatically lower outbreak rates, and 93 percent of 2026 cases are in unvaccinated or unknown-status individuals. Whether federal leaders will use that evidence is a different question, and the current administration has already answered it: Kennedy denied responsibility on national television, opposes mandates, gutted the ACIP, and removed six vaccines from the universal schedule. Pediatricians and epidemiologists say that posture — held by someone with governing authority over the nation's vaccination guidance — is itself driving hesitancy. The data have confirmed the science. The political decision is what the November case count will reflect.

Sources