Pennsylvania reports first measles-associated deaths in 35 years as state expands response

Pennsylvania has confirmed two measles-associated deaths, both involving unvaccinated Lancaster County residents. Announced August 25, 2026, the deaths are the first measles-associated deaths in the commonwealth in 35 years, according to the Pennsylvania Department of Health.

State officials have not released the individuals’ ages or other identifying information, citing privacy protections for their families. The state uses the term “measles-associated death” when laboratory or epidemiologic evidence of measles is present while the official cause of death is under investigation.

The announcement comes as Pennsylvania’s 2026 outbreak approaches 400 confirmed cases and students return to classrooms. The state is expanding vaccination access, coordinating with schools and health care providers, and urging people who may have been exposed and develop symptoms to seek guidance before visiting a medical facility.

Outbreak has reached counties beyond Lancaster

The Department of Health reported 393 confirmed measles cases in 2026. Both the department’s death-confirmation notice and its same-day response update described those cases as spanning 28 counties. WHYY/WVIA reported the same 393-case total across 29 counties. The difference has not been resolved in the public statements available as of August 27.

Lancaster County remains the center of the outbreak, but the statewide case total shows that the response is not limited to one community. The risk is not identical for every Pennsylvania resident: people who are fully vaccinated have substantially greater protection, while unvaccinated people and those who are not immune face greater exposure risk.

Measles spreads through the air and can remain infectious in an airspace for up to two hours after an infected person leaves. An infected person can spread the virus from four days before through four days after the rash or other symptoms appear.

State has delivered thousands of MMR vaccinations

Since the outbreak began in April, the Department of Health has administered more than 4,100 measles, mumps and rubella vaccinations through 91 pop-up clinics in impacted communities. The state plans to open 40 additional pop-up clinics in the coming weeks.

More than 35,000 Pennsylvanians received an MMR vaccination in July, according to the administration update. That was about 10,000 more doses than in a typical month.

Two doses of the MMR vaccine provide about 97% lifetime protection, according to the Department of Health. Families should check children’s vaccination records with a health care provider, particularly before the school year and when a child may have missed a recommended dose.

Schools and providers are preparing for cases

The Departments of Health and Education are working with school administrators, school nurses and health care providers. More than 1,000 health care providers participated in state medical briefings, and nearly 1,000 school nurses attended recent sessions focused on recognizing and responding to measles.

Many providers have limited experience diagnosing or treating the disease because measles has been uncommon in Pennsylvania for decades. State officials have sent guidance to schools and nurses on identifying cases and reporting immunization data. The outreach does not announce a new statewide school vaccination mandate or school closures.

State data for the 2025–26 school year showed that 93.2% of Pennsylvania kindergarten students, 94.6% of seventh graders and 96.9% of twelfth graders had received both required MMR doses. State officials also said some schools remain below the 95% community-immunity threshold cited by public health experts. That threshold is not a new statewide school requirement.

What residents should do after possible exposure

Symptoms usually appear seven to 14 days after exposure but can take as long as 21 days. They commonly include a high fever, cough, runny nose, red or watery eyes and a rash that typically starts on the head and spreads downward.

Anyone who believes they were exposed and develops symptoms should call a health care provider before going to a doctor’s office, urgent-care center or hospital. Calling ahead allows staff to prepare for a possible measles patient and reduces the chance of exposing other patients and workers.

Residents can contact the Pennsylvania Department of Health’s 877-PA-HEALTH hotline at 877-724-3258 with questions about exposure, testing and vaccination. The department’s measles guidance also lists vaccine access through providers, pharmacies, county or municipal health departments and state health centers.

What happens next

Pennsylvania plans to continue opening pop-up vaccination clinics, monitoring cases and coordinating with schools and medical providers. Public guidance may change as health officials update the outbreak count and identify additional exposures.

For residents, the immediate steps are practical: check MMR records, contact a provider about missing doses, watch for symptoms after a possible exposure and call ahead before seeking in-person care if measles is suspected.

Sources

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