Measles cases in 2026

As of October 1, 2026, 3,887 confirmed measles cases were reported in the United States in 2026. Among these, 3,869 measles cases were reported by 47 jurisdictions. A total of 18 measles cases were reported among international visitors to the United States. There have been 42 new outbreaks reported in 2026, and 95% of confirmed cases (3,700 of 3,887) are outbreak-associated. For the full year of 2025, a total of 2,289 confirmed measles cases were reported in the United States. Among these, 2,263 measles cases were reported by 45 jurisdictions. A total of 26 measles cases were reported among international visitors to the United States. There were 48 outbreaks reported in 2025, and 90% of confirmed cases (2,066 of 2,289) were outbreak-associated.

Status as published: active

Freshness and lifecycle

First seen: September 18, 2026
Last seen: October 6, 2026
Published by source: May 8, 2026
Lifecycle status: Current
View the official source record

Diseases

Locations

Version history

Every version of this record, oldest first -- earlier reported values remain visible even after a newer update supersedes them.

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