U.S. measles cases reach four times the annual average this year

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A sign warning patients sits outside a mobile clinic offering free measles vaccinations in Spartanburg, South Carolina, the United States, on February 6, 2026. /CFP

As of February 5, 2026, the United States has reported 733 confirmed measles cases this year, according to data released by the U.S. Centers for Disease Control and Prevention (CDC), a figure four times the country's typical annual average.

The CDC said most outbreaks nationwide are occurring in communities with low vaccination coverage or among unvaccinated populations.

In recent years, vaccination rates for measles, mumps and rubella (MMR) among kindergarten-aged children in the United States have continued to decline, making it increasingly difficult to achieve herd immunity.

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