U.S. Measles Cases Top 4,500 — More Than Double 2025's Total — as Outbreaks Hit Minnesota, Pennsylvania and Beyond

Minnesota's 2026 measles outbreak has reached its worst level in 35 years, with children making up the vast majority of cases.

Minnesota is experiencing its worst measles outbreak since 1990, a disease that routine childhood vaccination had nearly eliminated in the United States. The Minnesota Department of Health announced that case counts have surpassed any recorded in the state over the past 35 years, with the vast majority of those infected being children. The Minnesota outbreak is part of a much broader national crisis. The CDC has now reported 4,588 measles cases across the United States — more than double the total recorded in all of 2025 — with 178 additional cases added in the latest reporting period. Pennsylvania is also grappling with a significant outbreak. State Health Secretary Debra Bogen recently held a roundtable in hard-hit Mifflin County to address the spread of the disease and the challenges local communities face in responding to it. Measles is among the most contagious infectious diseases known — one infected person can spread the virus to nine out of ten unvaccinated people in close contact. Before widespread vaccination began in the 1960s, measles infected millions of Americans annually and caused thousands of deaths each year. Minnesota has faced measles outbreaks before linked to under-vaccinated communities. A major 2017 outbreak centered on the Somali-American community in the Twin Cities resulted in 79 confirmed cases, driven in part by declining MMR vaccination rates within that community.

Why it matters

Measles can cause serious complications including pneumonia, brain damage, and death, particularly in young children. An outbreak reaching a 35-year peak signals a meaningful erosion of the vaccination coverage that had kept the disease largely at bay.

What's next

The Minnesota Department of Health is expected to release further details on case counts, affected regions, and vaccination status of those infected as the outbreak develops.

Key facts

Bias & framing notes

All six sources appear to be regional Minnesota outlets running identical reporting — likely a shared wire or state press release — with no additional detail, original reporting, or independent verification across any of them. The core fact (MDH announcing a 35-year high, mostly children) is credible as a government health department statement, but the lack of any specific case numbers, geographic detail, or additional context in the available reporting limits confidence in the full picture.

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