Science & health
US measles cases reach 4,410 as Pennsylvania outbreak expands
The CDC has recorded 4,410 measles cases in the United States in 2026, including 451 hospitalizations, with cases rising by 330 in one week. Pennsylvania accounts for 1,222 cases across 42 counties, 225 hospitalizations and five confirmed deaths, while officials investigate a sixth. Federal investigators are assisting the state, which has expanded vaccination clinics. New York has declared an emergency near the outbreak. Falling kindergarten vaccination coverage, down to 92.4 percent in 2025–26, has left an estimated 280,000 children vulnerable.
Editorial summary · Publisher article
What matters
- Pennsylvania has administered more than 5,900 MMR doses through 202 pop-up clinics.
- Children and teenagers aged five to 19 represent 42 percent of US cases.
- The CDC estimates vaccination gaps put about 280,000 kindergarteners at risk.
Context & caveats
- The case and death counts are reported figures for 2026 and may change as health departments update surveillance data.
Why this made the edition
The report provides current nationwide and state-level case, hospitalization and death figures, public-health measures, and vaccination-coverage context.
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