U.S. measles cases exceed 5,000, highest annual total in 35 years

13 SOURCES UNITED STATESUPDATED

NOT MEDICAL ADVICE

This brief summarizes public reporting and official announcements. Research findings may be preliminary. Talk to a qualified clinician before making health decisions.

BLUF

The United States has recorded more than 5,000 measles cases in 2026, the highest annual total in 35 years, with cases reported in 45 states and Washington, D.C. Wisconsin officials have reported an infant death, and the U.S. and Mexico are due to have their measles-elimination statuses reviewed next week.

HOW THIS BRIEF WAS MADE 11 outlets: 5 national · 5 international · 1 trade press. Automated sourcing and summaries by the BLUF engine. Corrections

Why it matters

The outbreak affects public health across the country, with cases reported in nearly every state and deaths reported by state officials. The review could affect the U.S. standing as a country that has eliminated measles transmission.

What happens next

The U.S. and Mexico are scheduled to meet with the Pan American Health Organization next week for a three-day review of their measles-elimination statuses. The supplied reports do not say what determination will be made.

The outcome of the Pan American Health Organization review.

Further case and death reports from state health officials.