Measles Cases Surpass 1,000 in the U.S. for Third Time in 26 Years

February 28, 2026

Measles cases in the United States have exceeded 1,000 confirmed infections this year, marking only the third time in 26 years that the country has crossed that threshold, according to updated data from the Centers for Disease Control and Prevention.

Public health officials say the surge reflects growing concerns about declining vaccination coverage in certain communities, which has allowed the highly contagious virus to spread more easily.

Public Health Response

The CDC and state health departments are increasing outreach efforts to boost vaccination rates and contain outbreaks.

Officials stress that the MMR vaccine is safe and highly effective, providing about 97% protection against measles after two doses.
Health authorities are urging parents and adults to verify their vaccination status, especially before traveling internationally.

Broader Trend

This milestone underscores ongoing challenges in maintaining herd immunity. Public health leaders warn that without higher vaccination coverage, outbreaks could continue to occur.

The CDC continues to monitor case counts and coordinate with local health agencies to prevent further spread.

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