In Arizona and Utah, an outbreak has ballooned since August. Mohave County, Arizona has logged 172 cases and the Southwest Utah Public Health Department has logged 82 cases. The border cities of Colorado City, Arizona, and Hildale, Utah, are the heaviest hit.

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

Officials at the Utah Department of Health and Human Services said they are concerned about the spread of measles across the state.

Arizona reported only three new cases this week in the country's second-largest measles outbreak. Is the end near?

The South Carolina Department of Public Health said 16 of the 27 new measles cases stemmed from exposure at the Way of Truth Church in Inman.

The World Health Organization considers measles eliminated if a country goes a year without continuous local transmission. The United States achieved elimination in the year 2000. However, if new measles cases continue into January 2026, the U.S. will lose that status.

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.