Key developments

1. Jul 25, 2026

   Measles cases in 2026 surge to 2,318 across roughly 44-45 US jurisdictions, the highest annual total since 1991, driven by multi-state outbreaks including a large Utah-Arizona spillover.

   32 sources on this →
2. Jul 25, 2026

   New measles cases emerge in Maryland and Chenango County, New York, while wastewater surveillance in Utah and Kentucky's Louisville area prompts targeted vaccination efforts.

   96 sources on this →

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Photo: the United States’ — Wikimedia Commons / Wikimedia Commons

Measles Surge Tests Elimination Status in 2026

Measles cases in 2026 have surged to 2,318 across about 44–45 jurisdictions, the highest annual total since 1991 and well above 2025, driven largely by numerous outbreaks including multi-state clusters and a large Utah–Arizona spillover. Health officials warn that declining kindergarten vaccination rates and gaps in immunization are fueling the spread, with ongoing debates over leadership and vaccine misinformation complicating efforts to curb the outbreak and restore elimination status.

32 sources

Photo: CDC / Wikimedia Commons (Public domain)

Measles Cases Reach 1991 High, Elimination Status at Risk

Measles cases have been identified in Maryland and Chenango County, New York, with health departments urging vaccination, exposure monitoring, and outreach clinics as officials investigate potential exposures. Nationally, wastewater surveillance in Utah and Kentucky’s Louisville area is highlighting outbreaks and prompting targeted vaccination efforts alongside broader public guidance.