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Pennsylvania health officials reported 1,078 measles cases in 2026 as of the latest update, with 1,066 tied to an outbreak that began in April. The outbreak has caused 207 hospitalizations and five deaths, and is the largest U.S. outbreak reported since measles elimination in 2000.
Pennsylvania has reported 1,078 measles cases in 2026, including 1,066 linked to an outbreak that began in April, making it the largest U.S. outbreak reported since measles was declared eliminated in 2000. State health officials also reported 207 hospitalizations and five deaths connected to cases during the outbreak.
The state’s count includes 145 cases recorded in the seven days before the latest update. Officials added 74 cases since Monday; 40 of those had occurred more than two weeks earlier and were only then entered into the tally. The figures show both continued transmission and delays between cases occurring and being reported.
Of the 1,078 cases reported for the year, 12 were recorded in January and March, while the remaining 1,066 have been linked to the outbreak that began in April. The outbreak count is the relevant comparison with earlier U.S. outbreaks: it exceeds the 997 cases recorded in South Carolina’s outbreak, which ended in April, and the 762 cases in a Texas outbreak that ran from January through August 2025.
The five people who died were a newborn, a 6-week-old infant, an 18-year-old, a 20-year-old and a 40-year-old, according to the source report. All were unvaccinated; the two infants were too young to have received measles vaccination. The report says Pennsylvania officials recorded 34 new infections since Monday, indicating that transmission had not stopped at the time of the update.
A Record Outbreak Tests Measles Control
The case total matters beyond Pennsylvania because measles elimination in the United States depends on preventing the virus from spreading continuously for 12 months. A large, continuing outbreak can put that status under scrutiny, although a high case count alone does not establish whether the formal criteria have been met.
The deaths and hospitalizations also show the consequences of the outbreak across age groups. The report identifies two infants among those who died and notes they were too young for vaccination. It also says all five people who died were unvaccinated; that is information about these cases, not a count of vaccination rates or an explanation of every individual circumstance.
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Recent U.S. Outbreaks in Perspective
Measles was declared eliminated in the United States in 2000 after decades of vaccination efforts. In this usage, elimination means that the virus is not continuously transmitted in the country for a 12-month period; it does not mean that measles can never be brought into the country or that no cases can occur.
Pennsylvania’s outbreak has exceeded the recent U.S. outbreak totals cited in the report: 997 cases in South Carolina and 762 in Texas. The article describes Pennsylvania’s outbreak as the largest since elimination and says its 1,066 outbreak-linked cases are the largest recorded since 1991. These comparisons refer to reported outbreak totals, not necessarily to every measure of disease burden.
In November, experts at the Pan American Health Organization are scheduled to review data on whether the United States has lost its measles elimination status. The source report says experts widely expect that outcome, but presents it as an expectation rather than a decision already made. Canada lost its elimination status in 2025.
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Elimination Status Awaits Review
The case figures describe the situation as of the latest state update; they may change as additional infections are reported or earlier cases are added to the count. The report says 40 cases in the latest addition were already more than two weeks old, illustrating that the published total can lag behind events.
The United States’ elimination status has not yet been formally decided in the information provided. The November review is pending, and no final determination or detailed findings from that review are included. The source also does not provide a projected date for the Pennsylvania outbreak to end or a complete account of how each infection was acquired.
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State Counts and November Review
Pennsylvania’s health department is expected to continue publishing case updates as reports are processed. Readers should distinguish newly recorded cases from infections that occurred earlier, since the latest figures include a substantial number of delayed reports.
The next broader milestone is the Pan American Health Organization experts’ November review of U.S. measles data. That review will address whether the country has lost elimination status; until its findings are available, the status remains unresolved. The outbreak’s duration and its final case and hospitalization totals are also not yet known.
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Key Questions
How many measles cases has Pennsylvania reported?
Pennsylvania reported 1,078 cases in 2026 as of the latest update. Of those, 1,066 were linked to the outbreak that began in April.
How many people have died or been hospitalized?
The source report says the outbreak has resulted in 207 hospitalizations and five deaths. The people who died ranged from a newborn to a 40-year-old, and all were reported to be unvaccinated.
Is this the largest U.S. measles outbreak since 2000?
The report describes Pennsylvania’s outbreak as the largest U.S. outbreak since measles was declared eliminated in 2000. Its 1,066 outbreak-linked cases exceed the cited totals for South Carolina’s 997-case outbreak and Texas’s 762-case outbreak.
Has the United States lost measles elimination status?
No final determination is reported. Pan American Health Organization experts are scheduled to review U.S. data in November. The report says experts widely expect the status to be lost, but that expectation is not the same as a completed decision.
Source: fediverse
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