A 40-year-old woman from Jefferson County died Saturday from complications associated with measles, making her the third person in Pennsylvania whose death state officials have linked to the disease this year. Jefferson County Coroner Greg Furlong said the woman was unvaccinated. Her identity has not been released. “This is a heartbreaking loss for the family and an unfortunate reminder that measles can be a serious and potentially life-threatening disease,” the coroner’s office said in a statement. The Pennsylvania Department of Health reported 676 measles cases statewide as of Friday, including 52 new positive cases identified between Wednesday and Friday. Pennsylvania and South Carolina have reported the highest numbers of confirmed cases in the country, according to federal data. Jason Stiver, the Jefferson County chief deputy coroner and public information officer, said severe illness remains uncommon but warned that measles can cause serious complications at any age. He urged residents to recognize symptoms early and consult health care providers, while emphasizing public-health measures as a way to protect the wider community. The coroner’s office is working with the state Health Department on the case. No other state has announced a measles-related death in 2026, according to the report. The new death comes amid a public dispute over Pennsylvania’s earlier reports of two infant deaths in Lancaster County. After Gov. Josh Shapiro announced those deaths, U.S. Health and Human Services Secretary Robert F. Kennedy Jr. questioned the timing and accuracy of the state’s announcement in a post on X. Federal health officials have said they are reviewing whether to include the infant deaths in national counts. The Centers for Disease Control and Prevention generally relies on states’ determinations of cause of death during outbreaks so that warnings can reach doctors, public-health agencies and the public quickly. However, the CDC’s 2026 measles data page does not currently list a national death total. It says the National Center for Health Statistics has not yet received death records from 2026 identifying measles as the underlying cause, while Kennedy has said the records will be updated as they are submitted and reviewed. The CDC declared measles eliminated in the United States in 2000, but the highly contagious virus has returned in a nationwide resurgence. More than 3,200 confirmed cases had been reported across the country by last week.