Measles Cases in the U.S. Are at a 35-Year High

Measles is an old scourge that’s rapidly re-emerging as a new one. According to numbers released by the U.S. Centers for Disease Control and Prevention (CDC) on July 24, there have been 2,318 cases of measles reported nationwide so far in this year, already exceeding the 2,289 cases reported in all of 2025. The current figure is the highest incidence of measles in 35 years, a record set back in 1991 when there were 9,643 U.S. cases.It wasn’t long ago that measles cases were extremely rare in the U.S. In 1963, the first measles vaccine was introduced in the U.S., and decades of steady administration of the shot eventually led to the country being declared measles-free in 2000. There were some scattered infections in the ensuing years—56 cases in 2003, 55 in 2012, 13 in 2020. But this year and last year, the numbers have exploded.The surge has come amid a backdrop of drastic changes to childhood vaccinations. In January 2026, the CDC changed the childhood vaccine schedule—despite experts and organizations saying there had been no change in the science—after President Donald Trump directed the agency and Robert F. Kennedy Jr., Secretary of Health and Human Services and a longtime vacc...