US loses measles-free status after 5,000-plus cases in 2026
Why it matters: The setback follows more than a year of continuous spread and could trigger travel warnings and renewed vaccine advisories.
The United States has lost its measles-elimination status after the Pan American Health Organization determined the virus had spread continuously for at least 12 months, according to reports cited by Reuters and The Wall Street Journal. The decision ends a run that began in 2000, when the US was declared free of endemic measles transmission. The CDC has recorded at least 5,182 confirmed cases in 2026, with one report putting the total at 5,412, already more than double 2025’s count. Utah’s outbreak, which began in June 2025, was cited as meeting the threshold for uninterrupted local transmission. The loss is largely symbolic, but it underscores a broad resurgence tied to falling vaccination rates and could bring tougher travel and immunization warnings.