US measles cases top 5,000 for first time since 1991; 8 deaths reported

The US CDC has recorded 5,182 measles infections in 2026, the highest annual total in over three decades, with Pennsylvania the most affected state and eight deaths. This marks a significant resurgence of a vaccine-preventable disease, likely driven by declining vaccination rates. The outbreak's scale and mortality underscore a public-health emergency with potential for further spread.

AI disclosure: Model-written summary of the source, not a verified fact. Check the sources. How Mosaic works