The Pennsylvania Department of Health has reported at least 676 confirmed measles cases across 37 counties this year. The outbreak has resulted in 124 hospitalizations, with fewer than 1% of reported cases involving people who were fully vaccinated.
Officials did not release further details about the woman's death out of respect for her family.
Two earlier measles-related deaths in Pennsylvania involved infants in Lancaster County.
The outbreak comes amid a broader national resurgence. More than 3,200 measles cases have been confirmed across the United States in 2026, making it the country's largest outbreak since 1991, according to the report.
Related Tweet:
Pennsylvania woman dies from measles complications - third virus-related death in the state this year https://t.co/8cqyiLA5vT pic.twitter.com/MVxmILxNHd
— New York Post (@nypost) September 14, 2026

