Pennsylvania health authorities on Wednesday confirmed a fifth death linked to measles, as the state grapples with its most severe outbreak in more than three decades. The individual who died was unvaccinated and lived in Lancaster County, according to the state health department, which withheld further identifying details.
In a statement, officials said the fatality “meets the measles-associated death definition” and has been reported to the Centers for Disease Control and Prevention. The state has now tallied 943 measles cases, with roughly 40 percent concentrated in Lancaster County. At least 176 people have been hospitalized. All but four of the infected individuals were not fully vaccinated.
The other deaths include an unvaccinated 18-year-old in Mifflin County, a 40-year-old woman in Jefferson County, and two infants in Lancaster County. The mounting toll has thrust Pennsylvania into a bitter political standoff with the CDC, which has thus far acknowledged only two measles deaths nationwide. The agency’s database does not specify where or when those deaths occurred, leaving it unclear whether Pennsylvania’s cases are included. No other state has reported a measles death this year.
The discrepancy has sparked a public clash between Gov. Josh Shapiro, a Democrat seen as a potential 2028 presidential contender, and Health and Human Services Secretary Robert F. Kennedy Jr. over what criteria should define a measles death. The feud has become a flashpoint in the broader national debate over public health as a 2026 election issue, with both sides digging in.
Earlier this month, Pennsylvania’s health department began the process of requesting emergency assistance from the CDC’s Epi-Aid program, but only on the condition that the CDC publicly recognize the state’s death count. According to a state health department spokesperson, discussions between CDC staff and Pennsylvania officials about a potential Epi-Aid focus are ongoing, but no final decision has been reached.
The CDC reports at least 3,659 measles cases across the U.S. The last time the country recorded more than four measles deaths in a single year was 1991. Last year, three people died from measles—two in Texas and one in New Mexico. The current outbreak has already surpassed those annual totals, underscoring the severity of the resurgence.
Pennsylvania is currently reporting the highest number of measles cases in the nation. The state’s struggle to secure federal support amid the death-count dispute has drawn attention to the broader health agenda taking shape in Washington, where Kennedy has sought to reshape federal public health priorities.
As the outbreak continues to spread, the political ramifications are likely to intensify. Shapiro’s administration has signaled it will not back down from its demand for federal recognition, while Kennedy’s agency has shown no sign of altering its tally. The standoff could have implications for future emergency responses and for how measles deaths are classified nationwide. For now, Pennsylvania officials are urging residents to get vaccinated and to heed public health guidance as they confront the worst measles crisis in a generation.
