Pennsylvania Governor Josh Shapiro and Health and Human Services Secretary Robert F. Kennedy Jr. are locked in a heated public dispute over two measles-associated deaths in Lancaster County.

The deaths, announced Tuesday, mark the first measles fatalities in Pennsylvania in 35 years and the first in the United States this year tied to the highly contagious disease.

Among the two unvaccinated Lancaster County residents whose deaths were linked to measles was a newborn baby, according to Pennsylvania health officials.

Pennsylvania has recorded 424 measles infections statewide, with Lancaster County serving as the epicenter of the outbreak and accounting for 197 of those cases.

At a press conference, Shapiro blamed the Trump administration directly for spreading misinformation that he says has driven down vaccination rates across the state.

“There’s real-life consequences to scaring people and not relying on actual doctors and actual medical professionals to provide unbiased information to parents so that we can make reasonable decisions for our kids,” Shapiro said.

Kennedy escalated the confrontation by suggesting on social media, without providing evidence, that the state’s reported deaths may not have been accurately linked to measles.

“The announcement appears to have been premature, and the deaths may even have been altogether fabricated by one of the Governor’s hopeful staffers,” Kennedy wrote on X.

Kennedy also stated in a C-SPAN interview that “they cannot find any measles deaths in Lancaster County,” doubling down on his skepticism of the official state reporting.

Shapiro’s health secretary, Debra Bogen, pushed back on X, stating that the two measles-associated deaths had been reported to the CDC’s measles response team early Tuesday morning.

The CDC announced on X that it would independently investigate the cause of the two deaths, adding a federal layer of review to the increasingly politicized dispute.

Lancaster County Commissioner Josh Parsons added a further complication, calling for clarity on whether the patients “died OF measles or WITH measles,” and noting that the “Coroner’s office indicates that it currently has ZERO reported cases where measles is the immediate cause of death.”

The controversy arrives as Shapiro is actively campaigning for reelection as governor in November, giving the public health dispute a distinctly political dimension.

His criticism of Kennedy and the Trump administration mirrors broader Democratic messaging that has emerged since 2025 around the federal government’s handling of measles outbreaks across the country.

The standoff reflects a widening rift between state-level public health authorities and federal officials over vaccine policy, disease reporting standards, and the communication of health risks to the public.