Official state health data confirms that the Pennsylvania measles outbreak has exceeded 1,000 cases, marking the largest single state outbreak in the United States in 35 years.
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The Pennsylvania measles outbreak has surpassed 1,000 cases, making it the largest U.S. measles outbreak in 35 years.
Pennsylvania confirms more than 1,000 measles cases
Source: cidrap.umn.edu
At a glance
Verified October 7, 2026Key Evidence
Official state health data confirms that the Pennsylvania measles outbreak has surpassed 1,000 total cases.
Major news reports and public health tracking verify this event as the largest U.S. Measles outbreak in 35 years.
The reporting
What the Evidence Shows
Public health reporting establishes that the ongoing measles outbreak in Pennsylvania has crossed a notable threshold by surpassing 1,000 confirmed cases. According to The Guardian, the public health emergency has heavily affected Lancaster County, fueled in part by localized clusters of low vaccination coverage within Amish and Mennonite communities.theguardian.comtheguardian.comPennsylvania Measles Outbreak Hospitalizations DeathsLancaster County has been heavily impacted, driven in part by pockets of low vaccination rates within Amish and Mennonite communities National Context: The outbreak coincides with a broader national surge in measles cases across the United...
Reporting from The Washington Post and CIDRAP confirms that reaching this milestone represents the first time a single state outbreak has crossed 1,000 cases in 35 years, matching historical comparisons dating back to the early 1990s.washingtonpost.comwashingtonpost.comPennsylvania Measles Count Tops 1000 Cases First Time 35 YearsS. state outbreak has crossed the 1,000-case threshold in 35 years Historical Context (35-Year High): This marks the first time a single U.S. state outbreak has crossed the 1,000-case threshold in 35 years, tracing back to the early 1990s...
cidrap.umn.educidrap.umn.eduPennsylvania confirms more than 1,000 measles casesThe claim that the Pennsylvania measles outbreak has surpassed 1,000 cases, making it the largest U.S. measles outbreak in 35 years is verified and accurate according to official state health data and major news reporting Broad coverage from 10TV further notes that this event coincides with a wider national surge tracked by federal health authorities.+1 more
Primary trail
Verified Sources4
Open source
Pennsylvania Measles Count Tops 1000 Cases First Time 35 Years
Pennsylvania confirms more than 1,000 measles casesPrimary Source Extraction
Verified Document Excerpt
"Heading: Pennsylvania confirms more than 1,000 measles cases No other state has reported more than 1,000 measles cases in 35 years, when New York City alone confirmed 2,000 cases in 1991. Nationwide, the Centers for Disease Control and Prevention (CDC) reported 3,887 measles cases as of October 2, a 6.2% increase from the previous week. Heading: Number of deaths suggests uncounted cases The five deaths in Pennsylvania suggest the outbreak is much larger than reported, said Paul Offit, MD, director of the Vaccine Education Center at Children’s Hospital of Philadelphia."