Measles 2026: 1,792 US Cases, Elimination Status Gone — and Whooping Cough Up 1,500%

# Measles 2026: 1,792 US Cases, Elimination Status Gone — and Whooping Cough Up 1,500%

> **Quick answer:** As of April 23, 2026, the US has confirmed 1,792 measles cases — putting it on pace to blow past 2025's 33-year record before summer. PAHO already stripped the Americas region of measles elimination status in November 2025. The US faces its own formal review in November 2026. Simultaneously, whooping cough (pertussis) has surged an estimated 1,500% since 2021's pandemic-era low — both outbreaks driven by the same collapse in childhood vaccination coverage.

The United States is not on the verge of a vaccine-preventable disease crisis. It is already inside one. As of April 23, 2026, the CDC has confirmed 1,792 measles cases — more than 20 times the annual average during the 2001-to-2011 elimination era — across more than 30 jurisdictions. At the same time, whooping cough (pertussis) is surging at a pace that experts describe as the worst in nearly 80 years. These are not two separate stories. They are one story, with one cause: the systematic erosion of childhood vaccination coverage that began during the pandemic and has accelerated every year since.

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

## 1,792 Measles Cases — and the Number That Actually Tells the Story

The CDC's April 23, 2026 tracker shows 1,792 confirmed measles cases. Of those, 93% — 1,668 cases — are outbreak-associated, meaning they trace back to ongoing domestic transmission chains rather than international travel. When measles was properly eliminated, that ratio was inverted: roughly 40% of cases were imported, and domestic chains were quickly snuffed out.