As the nation nears last year's record case total, experts say the virus is becoming harder to contain, forcing medicine to relearn a disease many thought had been consigned to history.

Nationally there have been 1,983 measles cases this year, nearly the 2,288 total for all of 2025, which in itself was the ...

In late April, Joshua Good got a call from a parent at Ephrata Mennonite School: Two of their children had been diagnosed with measles. Good, who heads the private religious school in Lancaster County ...

Measles, one of the most contagious viruses in the world, is regularly infecting people in the U.S. again. Limited time: Save 25% on NBC News subscription Get exclusive reporting, live Q&As and ...

More than 120,000 suspected and confirmed measles cases have been reported in Bangladesh, where hospitals are overwhelmed.

There have been more measles cases reported in the U.S. this year than in any other year since the disease was declared eliminated in the country a quarter-century ago, according to a new count. At ...

Cases of measles continue to grow in Pennsylvania, particularly in the southeastern and southcentral parts of the state. The disease is highly contagious and known to linger in the air or on surfaces ...

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman. It feels increasingly difficult to go a day without hearing about yet another outbreak ...

Measles experts say communities generally need a 95% vaccination rate for measles to attain herd immunity.

As the risk of measles remains an ongoing concern, herd immunity in Allegheny County, Pennsylvania, is already slipping. According to data obtained via The Washington Post in January 2026, 1 in 3 ...

Florida’s childhood vaccination rates continued to drop in the 2025-26 school year, even as measles cases in the state soared in 2026. The vaccination rate for Florida kindergartners now hovers around ...