Pennsylvania Expands Measles Alert to 8 Counties, Urges MMR Shots From 6 Months
Updated
Updated · The Philadelphia Inquirer · Jun 26
Pennsylvania Expands Measles Alert to 8 Counties, Urges MMR Shots From 6 Months
3 articles · Updated · The Philadelphia Inquirer · Jun 26
Summary
Pennsylvania reported 81 measles cases across eight counties in 2026 after detecting new infections in York and Northumberland, prompting officials to recommend early MMR vaccination for infants in affected areas.
The state now advises a “dose zero” for babies 6 to 11 months old who live in or travel to outbreak zones, while urging faster second doses for older children and two doses for unvaccinated adults.
Lancaster remains the outbreak center with 38 cases since late April, including seven in the last two weeks; Northumberland has six, York one, and Lebanon 20.
All confirmed cases involved people without two documented MMR doses or with unclear status, as officials continue contact tracing and say it is still too early to link the newest county cases.
Vaccination gaps are a key concern: Lancaster kindergarten coverage is about 88.5%, below the 95% level experts say is needed to stop spread of a virus that can infect 9 in 10 unvaccinated exposed people.
Measles was found in wastewater miles from the outbreak's center. Is a Philadelphia outbreak now inevitable?
With U.S. cases soaring since 2025, how close is the nation to permanently losing its measles elimination status?
As measles cases surge, will Pennsylvania reconsider the vaccine exemption laws fueling the public health crisis?
Pennsylvania’s 2026 Measles Outbreak: Over 2,100 U.S. Cases Signal National Vaccine Crisis and Threat to Elimination Status
Overview
Pennsylvania is facing a serious measles outbreak as of late June 2026, with Lancaster and Lebanon counties especially hard hit and over 60 cases reported there. The outbreak is spreading, mainly affecting people who are unvaccinated or whose vaccination status is unknown, despite 94% of Pennsylvania kindergarteners being vaccinated. This highlights the vulnerability of unvaccinated groups. In response, the Pennsylvania Department of Health has launched a strong public health campaign, including active vaccination clinics across affected areas. These efforts aim to contain the outbreak and protect the community, showing the importance of vaccination in preventing further spread.