The CDC has counted 4,410 measles cases in 2026, the worst year since 2000. Will its count top 4,750 by Oct 24?

The CDC's national measles count did not reach 4,750 cases by October 24, 2026. The agency's most recent weekly update, published October 16, reported 4,410 confirmed cases nationwide as of October 15 — an increase of 330 cases from the prior week's tally of 4,080. Pennsylvania remained the epicenter of the country's largest outbreak, with more than 1,200 infections and five measles-associated deaths reported by the state, though the CDC's national death toll stood at two confirmed cases. The CDC counts only cases confirmed and reported by state and local health jurisdictions, a reporting lag that typically keeps the national total somewhat behind real-time outbreak activity. At the prevailing week-over-week growth rate of roughly 300 to 340 cases, the national total would have needed two consecutive large weekly jumps to clear 4,750 by October 24, a pace the outbreak had not sustained through mid-October. The community predicted this outcome correctly: only 33% of forecasters expected the threshold to be topped, matching the eventual no. The 2026 outbreak, concentrated in under-vaccinated communities and already roughly 93% above 2025's full-year total, remains the worst measles year in the United States since domestic elimination of the disease was declared in 2000.