Two unvaccinated people in Pennsylvania have died from measles, marking the first measles deaths reported in the United States this year. The fatalities occurred in Lancaster County, where a large outbreak has hospitalized 70 people and infected over 390 since the virus reemerged. Health officials stated the victims were unvaccinated but did not specify their ages.

The outbreak represents a record-setting year for measles in the U.S., with more cases reported in 2026 than in any year since the virus was declared eliminated in 2000. Dr. Amesh Adalja of the Johns Hopkins Center for Health Security noted these deaths are "extremely rare" but serve as a harbinger of the virus taking hold again. Routine childhood vaccination rates have declined nationwide, dipping below the 95 percent benchmark needed to prevent outbreaks. In Lancaster County, vaccination rates are particularly low, with just a quarter of the local Amish community immunized according to a 2025 estimate.

The measles vaccine, typically administered as the M. M. R. shot, prevents more than 97 percent of infections.

There are no specific treatments for measles, which can lead to pneumonia or brain swelling, especially in children. Dr. Debra Bogen, Pennsylvania's health secretary, emphasized that the disease was eliminated in the Commonwealth for over three decades, leaving many unfamiliar with its severity. This is a developing story with updates expected.