A 40-year-old unvaccinated woman in Jefferson County, Pennsylvania has died of complications from measles, the county's coroner confirmed on September 12. Preliminary findings indicate respiratory failure "due to suspected measles," with the death certificate noting she had chronic obstructive pulmonary disease (COPD) and required supplemental oxygen.
The woman's death marks the third vaccine-preventable, measles-linked fatality in the United States this year — all three occurring in Pennsylvania, a state that had not reported a measles death in 35 years prior to 2026.
Pennsylvania is experiencing its worst measles outbreak in decades, with over 670 confirmed cases and 124 hospitalizations spanning 37 counties. The outbreak has been fueled in part by declining vaccination rates and organized anti-vaccine sentiment.
The two previous deaths occurred in Lancaster County babies. One was a 6-week-old girl with a severe genetic condition whose death the county coroner attributed directly to measles. The other was a newborn boy whose mother was severely ill with measles at the time of birth; the state counts it as a measles-associated death, though the county coroner disputes the classification.
Those infant deaths became the center of a political firestorm when US Health Secretary Robert F. Kennedy Jr. — a prominent anti-vaccine activist — publicly disputed the deaths and accused Pennsylvania Governor Josh Shapiro of fabricating them. In an online exchange, Kennedy spread misinformation about the measles vaccine.
The CDC, now under Kennedy's leadership, is not counting either infant death in its national measles data. The agency cites a new reporting requirement that did not exist prior to the Pennsylvania events, a move critics say is designed to minimize the outbreak's severity. The US Department of Health and Human Services did not respond to inquiries about the new rule.
The Jefferson County coroner's office said it is working with the state health department, which has not yet added the latest death to its official outbreak tally.
The case underscores the real-world consequences of vaccine hesitancy and political interference in public health data. Measles, once declared eliminated in the United States in 2000, has made a alarming comeback in 2026, with Pennsylvania at the epicenter.
