Overview
- The CDC reports 171 infections across nine states so far in 2026, with national case updates moving to Fridays.
- South Carolina added 124 cases since Friday for 434 total, with 409 quarantined as officials report slipping contact tracing after a public exposure at the state museum in Columbia.
- Utah surpassed 200 cases, concentrated in the southwest district, with officials linking the virus strain to last year's Texas outbreak.
- Maricopa County, Arizona, confirmed its first 2026 case in a hospitalized adult tied to overseas travel, and health authorities are notifying potential contacts.
- Kentucky logged its first 2026 case in an unvaccinated Jessamine County resident exposed by an infectious out-of-state visitor, while Snohomish County, Washington, declared three pediatric cases linked to travelers from South Carolina.