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Measles Declared Endemic in United States

scienceNov 10, 2026202,209

An analysis of genetic data shows measles transmission chains have persisted in the United States, including ongoing chains in Utah and Arizona, meaning the country no longer meets measles elimination standards. The New York Times reported that several chains of transmission have continued for more than a year, and an international panel of scientific experts is convening Tuesday to evaluate the U.S. elimination status. The Centers for Disease Control and Prevention reported that as of November 5, 2026, 5,182 confirmed measles cases were reported in the United States in 2026, with 5,164 cases reported by 47 jurisdictions. Public-health writers and outlets note the panel is likely to remove the U.S. elimination designation soon; that formal change would reclassify measles as endemic rather than eliminated in the country. The shift reflects sustained domestic transmission documented by genetic sequencing, and it sets up renewed expectations for surveillance, vaccination outreach, and outbreak response by federal and state health authorities.

Apoorva Mandavilli
@apoorvanyt.bsky.social

An analysis of genetic data shows the measles virus is once again endemic in the United States, even as an international panel convenes this week to evaluate the country’s measles elimination status. www.nytimes.com/2026/11/10/h...

1683d ago
DrDinD.bsky.social
@drdind.bsky.social

🧵 This is entirely on RFK Jr. "Measles is once again endemic in the United States, 26 years after it was declared eliminated in the country, an analysis of genetic data from outbreaks of the disease has found." He has death of children on his hands

CIDRAP headline 

A baby in Wisconsin has died from measles, the 3rd such US death this week
Sarah Boden  November 5, 2026
 Measles
1492d ago
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