Pennsylvania Reports a Fourth Measles-Linked Death as State and Federal Tallies Differ
Pennsylvania health officials reported a fourth death from measles-associated illness, with all four U.S. measles-associated deaths this year in Pennsylvania. The Guardian
The death announced on September 15, 2026 was an 18-year-old Mifflin County resident diagnosed with encephalomyelitis, an inflammation of the brain and spinal cord that can follow infection. Lancaster and Mifflin counties have been the center of Pennsylvania's measles outbreak.
Pennsylvania has reported nearly 700 cases of measles. The United States has seen more than 3,300 measles cases in 2026. Transmission continues. The state reported 17 new measles-positive cases since September 4, 2026, and officials had confirmed 676 cases across 37 counties as of the September 11 update. Pennsylvania Department of Health
The count is disputed. The CDC does not include any of the Pennsylvania measles-associated deaths in its national tally. The CDC states that its National Center for Health Statistics, the office that codes death certificates by underlying cause, has no 2026 records with measles as the underlying cause. CDC As of September 11, 2026, the CDC had not added the Pennsylvania deaths to its dashboard and said it was reviewing additional information.
The state and federal counts have diverged for weeks. The Pennsylvania health department notified the CDC of two measles-associated deaths on the morning of August 25, 2026, and then made the deaths public. Reuters As of September 14, 2026, the department had confirmed two measles-associated deaths in Pennsylvania in 2026. Pennsylvania Department of Health
Separate fatality reports have since emerged. A 40-year-old woman in western Pennsylvania died of measles-related complications, according to the Jefferson County coroner. Reuters The September 15 report of a fourth death brings the state-associated total to four, all within Pennsylvania.
Shapiro called measles deaths in Pennsylvania 'completely preventable' on August 25, 2026.
The broader context here is a shift in national measles patterns. 2026 is the worst year for measles in the United States since 1992. The United States eliminated measles in 2000, meaning continuous spread inside the country had stopped. Three people died of measles in the United States in 2025, a year in which 800 measles cases and 10 outbreaks were reported during January 1-April 17, 2025.
Looking at what this means for tracking disease, the split turns on definitions. Think of two scorekeepers using different rulebooks. Pennsylvania reports measles-associated deaths, where measles is linked to the illness. Federal mortality tracking, through underlying-cause coding, has not recorded measles as the underlying cause for 2026. For public health workers, that distinction shapes dashboards, trend lines, and comparisons across states. It also shapes how outbreak severity is described when local clinical links and federal certificate rules do not match.
In my view, the next test is procedural rather than epidemiological. Whether the CDC revises its dashboard after review of additional information will clarify how associated deaths are judged across states. Until then, Pennsylvania carries most of the reported illness in this outbreak cluster and the entire associated death count reported by state officials.
