US measles cases top 1,300 as report details New Mexico outbreak

The CDC reported 1,362 confirmed measles cases in the United States and a Morbidity and Mortality Weekly Report described New Mexico’s 99-case outbreak last year, noting a 55% increase in MMR doses administered during the response.

The Centers for Disease Control and Prevention said this week that 1,362 measles cases have been confirmed in the United States so far this year. A recent Morbidity and Mortality Weekly Report reviewed New Mexico’s 99-case outbreak from 2025 and described increases in MMR vaccine uptake during the response. Officials have reported multiple state outbreaks and said the nation’s elimination status will be reassessed in November. Public updates have emphasized case counts, outbreak locations, and vaccination data. Known details: - The CDC’s weekly update lists 1,362 confirmed U.S. measles cases this year, with cases reported in about 30 states plus New York City. - A 2025 New Mexico outbreak involved 99 cases over six months and was followed by a reported 55% increase in MMR doses administered in the state during the response period. - Nationally, officials say 94% of current cases are linked to outbreaks and 92% of case-patients are unvaccinated or have unknown vaccination status. - South Carolina reported an outbreak totaling 996 cases, with most in Spartanburg County, and other states including Florida, Utah, and Colorado have reported recent case increases. - The CDC has noted the U.S. could exceed last year’s measles total and will assess whether the country retains measles elimination status in November. - New Mexico’s report described coordinated communication and vaccination activities during its response, and the state declared that outbreak over after two incubation periods. Summary: Officials report growing measles activity across multiple states, with a large share of cases occurring in people who were unvaccinated or whose vaccination status was unknown. Federal and state reports describe responses such as increased vaccination efforts in New Mexico, and the CDC will reassess national measles elimination status in November. Undetermined at this time.