Measles Outbreak in the U.S. Measles Outbreak in the U.S.

In 2025, the United States is witnessing its largest measles outbreak in years, with over 1,600 confirmed cases across 42 states. The CDC reports 44 outbreaks so far, a sharp increase compared to 2024. Health experts link this rise to declining vaccination rates and misinformation about vaccines on social media. Many cases involve children who were not immunized, prompting renewed calls for stronger vaccination campaigns. Measles, once nearly eradicated in the U.S., has returned as a major public-health concern. Hospitals are reinforcing containment measures, and several states are reviewing school immunization policies to prevent further spread.