Measles surge continues: CDC reports 416 confirmed cases in 2026 across 14 jurisdictions as outbreak-associated spread dominates

CDC’s latest tally: 416 cases reported in 2026

Measles activity remains a significant U.S. public health concern in January 2026. The Centers for Disease Control and Prevention updated its national measles totals on January 23, 2026, reporting 416 confirmed cases so far this year. The CDC said cases have been reported across 14 U.S. jurisdictions, with additional cases among international visitors.

The CDC’s update emphasizes that the overwhelming share of confirmed cases are outbreak-associated — tied to outbreaks that began in 2025 rather than newly declared outbreaks starting in 2026. That pattern indicates continued “echo” transmission and the difficulty of extinguishing large, multi-jurisdiction outbreaks once they take hold in pockets of low vaccination coverage.

Where cases are appearing and why that matters

The CDC’s 2026 jurisdiction list includes states such as California, Minnesota, North Carolina, South Carolina, Washington, and others, underscoring broad geographic spread rather than a single isolated cluster. Even when local case counts are small, public health agencies treat measles seriously because the virus is highly contagious and can spread rapidly in under-immunized communities.

Local reporting illustrates how fast cases can surface following travel and exposure. For example, Axios Charlotte reported confirmed measles cases in Mecklenburg County, North Carolina, after earlier signals from wastewater detection, highlighting how surveillance tools and rapid confirmation can shape response measures.

Public health guidance remains centered on vaccination

Health officials continue to stress the importance of the MMR vaccine as the primary protection against measles and its complications. The CDC publishes ongoing resources for communities experiencing outbreaks and provides updated national totals on a regular schedule.

With the majority of cases tied to continuing outbreaks, the key near-term focus for public health authorities is preventing additional chains of transmission — especially in schools, healthcare settings, and communities where vaccination rates are below levels that help stop spread.