The United States is facing its second surge in measles cases. Large outbreaks in Utah, Arizona and South Carolina are continuing to grow. CNN is tracking the cases.

The Centers for Disease Control and Prevention (CDC) today said the United States has 1,912 confirmed measles cases so far in 2025, an increase of 84 cases since last week and a bad sign as holiday gatherings, travel, and indoor activities is set to pick up in the final weeks of the year.

The surging number of measles cases around the world is a stark warning sign that outbreaks of other vaccine-preventable diseases could be next, the World Health Organization warned Friday.“It’s crucial to understand why measles matters,

One study estimates that an outbreak the size of the one in West Texas earlier this year costs about $12.6 million.

The CDC has confirmed 1,723 measles cases as of Nov. 12 — a more than 500% increase from 2024, when 285 U.S. cases were confirmed. The measles outbreak has progressively worsened. Nearly every state has reported measles cases, except for Connecticut ...

Spartanburg's 'accelerating' measles outbreak has surpassed 100 cases. The underlying causes go beyond simple exposure into culture and experiences