Measles Outbreak 2026: 1,842 US Cases, 22+ Active Outbreaks, Utah-Arizona Cluster Explained

# Measles Outbreak 2026: 1,842 US Cases, 22+ Active Outbreaks, Utah-Arizona Cluster Explained

> **Quick answer:** The US confirmed 1,842 measles cases as of May 8, 2026 — the worst single-year total since measles was declared eliminated in 2000. Twenty-five outbreaks are active across 39 jurisdictions. Utah leads the nation with 440+ cases; Arizona has 93. Ninety-two percent of all patients were unvaccinated or had unknown vaccination status. The CDC warns the US is now "highly likely" to lose its 26-year measles elimination designation this fall.

The measles outbreak of 2026 has officially become the worst since measles was declared eliminated in the United States. The 1,842 confirmed cases as of May 8, 2026 surpass every post-elimination benchmark, and public health officials are no longer hedging: the US is on track to lose the elimination status it has held since 2000 when a formal review convenes in November. For parents searching for symptoms, school requirements, and what to do right now, this is the clearest picture available.

*This article is for informational purposes only and does not replace professional medical advice. Consult a healthcare provider for medical concerns.*

## 1,842 Cases Across 39 Jurisdictions — The Numbers in Full

The CDC confirmed 1,842 measles cases as of May 8, 2026, up from 1,792 on April 23 and 1,714 on April 9. The acceleration is steady: the country is adding 25-50 confirmed cases per week. Twenty-five separate outbreaks have been identified in 2026 alone, and 93% of all 2026 cases — 1,712 of 1,842 — are outbreak-associated, meaning they trace to ongoing domestic transmission chains rather than international travel.