There is a measles outbreak in the United States that is the deadliest in decades.
Posted by All In with Chris Hayes, Checked
- Sources
- 2 contradict5 support
- Said
- 1 time·
- Confidence
- 60%
All In with Chris HayesSep 19, 2026
Friday, September 18, 2026; 8pm: Tonight, Congressman Jamie Raskin on Donald Trump's latest attack on the Constitution. Plus, JD Vance takes his "give us another chance" tour deep into Trump country. And it’s the worst U-S measles outbreak in decades but don't worry, the Trump Administration says actually, no it isn't. Want more of Chris? Download and follow his podcast, “Why Is This Happening? The Chris Hayes podcast” wherever you get your podcasts. To listen to this show and other MS podcasts without ads, sign up for MS NOW Premium on Apple Podcasts. …
The claim as extracted says there is a US measles outbreak that is the deadliest in decades; the passage says the worst US outbreak in decades, a narrower scope.
A detail. The sources confirm the gist; the verdict faults a detail such as a date, number or wording.
This claim is about the present, so it is judged as of the day it was checked.
What we found
Contradicts. The CDC reported no confirmed measles deaths in the US for 2026 as of mid-September, and the 2026 CDC-based sources note no fatalities, undercutting a 'deadliest' framing at the national level.[1][4]
Supports. CDC data show 4,588 confirmed US measles cases in 2026 as of Oct 22, more than double 2025, and CBS and NPR describe the year as the worst in more than three decades.[2][5][6]
Supports. CNN reporting, as excerpted, describes the Pennsylvania outbreak as the largest and deadliest in the US in more than 30 years, with five deaths out of about 1,300 cases.[3][7]
Context. Pennsylvania deaths were 4 to 5 by mid-to-late October, and CNN notes an undercount and that the death rate may be 1.5 to 5 times average; as of 2026-09-19 the Pennsylvania death count was lower still.[4][7]
Sources
7 sources: 3 primary, 2 not rated, 2 tier 2
- 1Measles disease outbreaks are surging again globally in 2026pmc.ncbi.nlm.nih.gov · primary source · cited for: contradicts
- 2Measles Cases and Outbreakscdc.gov · primary source · cited for: supports
- 3Measles | The Transmissionunmc.edu · primary source · cited for: supports
- 4Measles in the United Statescori.centerforhealthsecurity.org · not rated · cited for: contradicts, context
- 5U.S. measles cases more than double what they were last ...npr.org · tier 2 · cited for: supports
- 6As measles outbreaks grow in the U.S., maps and charts show a...cbsnews.com · tier 2 · cited for: supports
- 7One US measles outbreak is proving particularly deadly. ...us.cnn.com · not rated · cited for: supports, context
Where this claim was made
Said in 1 published post
Related claims
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