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US Measles Cases Soar: Highest in 33 Years!
31 Dec, 2025
Summary
- US recorded over 2,000 measles cases, a grim record not seen since 1992.
- Most cases (93%) were among unvaccinated or unknown vaccination status individuals.
- Measles outbreaks accounted for 87% of all reported cases nationwide.
The United States has reported over 2,000 cases of measles as of December 23, 2025, a threshold not crossed in more than 30 years. This significant resurgence is primarily fueled by 50 distinct outbreaks across the nation, comprising 87% of the total confirmed infections. The Centers for Disease Control and Prevention data indicates a strong correlation between the outbreaks and unvaccinated populations.
Measles, a highly contagious illness that was eliminated in the U.S. by the year 2000, has reappeared, predominantly affecting individuals without vaccinations. In 2025, a striking 93% of reported measles cases were found among the unvaccinated or those with an unknown vaccination history. The MMR vaccine offers substantial protection with a 97% efficacy rate, typically administered in childhood.
