August 25, 2026

Pennsylvania health officials announced on August 25, 2026, that two residents of Lancaster County have died from measles. Both individuals were unvaccinated, according to the Pennsylvania Department of Health. These are Pennsylvania’s first measles-related deaths in 35 years and the first reported measles deaths in the United States in 2026. (Pennsylvania.gov⁠)

The deaths are particularly troubling because measles is one of the most preventable serious infectious diseases. The two-dose MMR vaccine (measles, mumps and rubella) provides approximately 97% protection against measles. Pennsylvania has already reported 393 measles cases across 28 counties in 2026, demonstrating how quickly the virus can return when vaccination coverage declines. (Pennsylvania.gov⁠)

Measles should not be dismissed as simply a childhood illness accompanied by fever and a rash. It is an extraordinarily contagious airborne infection that can cause pneumonia, brain inflammation (encephalitis), permanent neurological complications and death. Pennsylvania health officials report that nearly 20% of people who contract measles require hospitalization, while approximately one to three people per 1,000 cases may die. (Pennsylvania.gov⁠)

What makes these deaths especially tragic is that we already possess an effective means of preventing them. Widespread vaccination once made measles so uncommon in the United States that many people today have never personally witnessed its consequences. That success can paradoxically make vaccination seem less important. In reality, measles disappeared from everyday life largely because vaccination worked.

Vaccination also extends beyond individual protection. Because measles spreads so easily, very high vaccination coverage—around 95%—is needed to help prevent sustained outbreaks and protect infants and others who cannot be vaccinated. When vaccination rates fall, those community protections weaken and the virus gains opportunities to spread. (Reuters⁠)

The deaths of two Pennsylvanians in August 2026 are therefore more than statistics. They are a reminder that diseases controlled by vaccination have not ceased to exist. Measles can kill, and deaths from measles are largely preventable through vaccination. Maintaining high MMR vaccination rates remains one of the simplest and most effective ways to prevent future illness, hospitalization and unnecessary loss of life.