Active investigation

Latest report

Measles cases in 2026

As of October 22, 2026, 4,588 confirmed measles cases were reported in the United States in 2026, including 4,570 cases reported by 47 jurisdictions and 18 cases among international visitors. 43 new outbreaks were reported in 2026, with 96% of cases (4,404) being outbreak-associated. For 2025, 2,289 confirmed cases were reported with 90% outbreak-associated.

Freshness and lifecycle

• First seen: September 18, 2026
• Last seen: October 25, 2026
• Published by source: October 22, 2026
• Lifecycle status: Latest report
• View the official source record

Diseases

• Measles

Locations

• Alabama
• Alaska
• Arizona
• California
• Colorado
• Connecticut
• Delaware
• District of Columbia
• Florida
• Georgia
• Idaho
• Illinois
• Indiana
• Iowa
• Kansas
• Kentucky
• Louisiana
• Maine
• Maryland
• Massachusetts
• Michigan
• Minnesota
• Missouri
• Montana
• Nebraska
• New Jersey
• New Mexico
• North Carolina
• North Dakota
• Ohio
• Oklahoma
• Oregon
• Pennsylvania
• Rhode Island
• South Carolina
• South Dakota
• Tennessee
• Texas
• Utah
• Vermont
• Virginia
• Washington
• West Virginia
• Wisconsin
• Wyoming

Version history

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

1. September 17, 2026 - Measles cases in 2026
2. September 17, 2026 - Measles cases in 2026
3. September 24, 2026 - Measles cases in 2026
4. September 24, 2026 - Measles cases in 2026
5. September 24, 2026 - Measles cases in 2026
6. May 8, 2026 - Measles cases in 2026
7. October 8, 2026 - Measles cases in 2026
8. October 8, 2026 - Measles cases in 2026
9. May 8, 2026 - Measles cases in 2026
10. October 22, 2026 - Measles cases in 2026 (current)

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