The United States has logged 1,983 confirmed measles cases in 2026, the CDC reported in surveillance data current to May 28. Of those, 1,974 were reported by 40 jurisdictions; the remaining 9 were among international visitors to the United States. The figure arrives months before federal and international officials are expected to assess, in November, whether the country still meets the definition of measles elimination it first achieved in 2000.
The 2026 caseload is concentrated in outbreaks rather than scattered travel-linked infections. The CDC counts 30 new outbreaks this year, and 93% of confirmed cases — 1,847 of 1,983 — are outbreak-associated. That clustering is the signal epidemiologists watch most closely, because elimination status hinges on whether sustained, homegrown transmission has taken hold.
What November decides
Elimination, as U.S. and Pan American health authorities use the term, means the absence of continuous domestic transmission of a single measles strain. CIDRAP reports that “the country will likely lose its measles elimination status — which it gained in 2000 — in November, when officials assess the data.”
93% of 2026’s confirmed cases are tied to outbreaks — the clustering that puts continuous transmission, and elimination status, in question.
Losing the designation would be a symbolic and surveillance milestone rather than an immediate change in vaccine policy or clinical guidance. It would, however, formalize what the case curve already suggests: that measles is again circulating widely in pockets of the country. The CDC’s count includes only confirmed cases notified to the agency, excluding probable cases, so the true reach may be larger. Measles is vaccine-preventable, and the CDC attributes the 2000 elimination milestone to sustained MMR vaccination coverage above roughly 95%. This report is not medical advice; questions about measles risk or MMR vaccination should go to a clinician.