The United States has officially exceeded the measles case count from 2025, according to data released by the Centers for Disease Control and Prevention on Friday. The country has documented 2,318 cases through mid-year 2026, surpassing the 2,289 cases recorded during all of 2025. This represents the highest annual case total since measles was declared eliminated in 2000, and marks the worst year for the disease since 1991. The country crossed the 2,000-case threshold in the previous month before continuing to climb during July.
Major outbreaks have occurred across multiple states, with South Carolina, Utah, and Arizona experiencing particularly large clusters. Additional cases have been reported in various other states, and the situation suggests the US may be entering a period where measles becomes a regularly circulating disease capable of affecting thousands annually. Vaccination coverage has declined below the 95% threshold considered necessary to prevent outbreaks, a drop from the high immunization rates that enabled the disease’s elimination in 2000.
International health officials are scheduled to meet in November to determine whether the US and Mexico should lose their measles-free status designations. Experts note that reported case numbers likely underestimate the true scope of the outbreak, as some infected individuals do not seek medical care. Reversing the trend would require significant efforts to increase vaccination rates nationwide.
The measles surge occurs amid other public health challenges, including hantavirus, screwworm, Ebola, cyclosporiasis, whooping cough, and bird flu. Former CDC leadership has indicated that staffing and funding cuts to preventive and response programs have weakened the nation’s capacity to manage infectious disease outbreaks compared to the period before the Covid pandemic. The American Academy of Pediatrics characterized the outbreak as an avoidable crisis affecting children across communities.
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