PAHO commission finds US lost measles-free status after 26 years, 10 deaths reported

An independent commission that reports to the Pan American Health Organization has found that the United States no longer qualifies for measles elimination status, ending a designation held since 2000. The commission met from Nov. 10 to 13 and was scheduled to classify countries at its close, according to PAHO's October notice. Its findings are transmitted to PAHO's director, who formally notifies governments, with a public announcement expected next week. PAHO placed the United States and Mexico under review in January and said the U.S. review clock began Jan. 20, 2025.

CDC data shows 5,412 confirmed measles cases in 2026 as of Nov. 12, more than double 2,289 for all of 2025, across 47 jurisdictions. Pennsylvania reported its seventh measles-associated death, an unvaccinated Montour County resident, with 1,542 cases and 305 hospitalizations statewide. Wisconsin reported a second pediatric death in an outbreak reaching 649 cases. With a New York child's death earlier this month, state reports total 10 deaths, while CDC lists six and says the figure is subject to change.

The finding follows Canada's loss of elimination status last November, which ended regional verification of endemic measles-free status. Scientific evidence also points to sustained transmission: Utah public health lab researchers reported in an August preprint that a single strain circulated for more than a year, causing more than 600 cases from June 2025 to June 2026. Pennsylvania, Wisconsin, South Carolina and New York have had outbreaks lasting months. HHS said its mission does not change and Kennedy and CDC Director Erica Schwartz continue to recommend MMR vaccination, after Kennedy publicly questioned Pennsylvania deaths in August.

Losing elimination status matters because it converts a public health achievement into an institutional failure with measurable human costs. Reinstatement requires at least 12 months without any measles strain spreading continuously, a threshold made harder by rising nonmedical exemptions and falling kindergarten MMR rates. The affected populations are children and unvaccinated communities, but the broader stake is the reliability of immunization systems, disease surveillance and federal-state coordination during outbreaks.