US measles cases surpass 1,000. There were 285 total cases in 2024.
Source: USA Today
May 9, 2025, 2:19 p.m. ET
Measles infections in the U.S. have topped 1,000 in 2025 as cases continue to crop up in new states. While Texas remains the epicenter battling the largest number of cases, the presence of measles has been confirmed in 30 states by the Centers for Disease Control (CDC) as of Friday, March 9.
The weekly CDC update counted 1,001 confirmed cases, with 14 separate outbreaks (defined by the agency as three or more related cases) and 93% of infections being outbreak-associated. These numbers have surpassed the totality of last year's infections, which added up to just 285 across 32 states with 16 distinct outbreaks and 69% of cases being outbreak-associated.
The majority of this year's infections (67% or 675) have been reported in children and teens under the age of 20 and 96% of infections have occurred in people who are unvaccinated or of unknown vaccination status. There have been three confirmed measles deaths, two children and one adult, thus far in 2025.
Measles is a vaccine-preventable disease that was previously eradicated in the U.S. in 2000, meaning there was no spread and new cases were only those contracted from abroad. Vaccine rates have declined, resulting in a growing number of states no longer reporting rates consistent with herd immunity, and infections have returned. The last outbreak of a similar scale occurred in 2019, when a total of 1,274 cases were confirmed across the country. Having already surpassed the 1,000 mark in only the fifth month of the year, however, 2025 is shaping up to be the largest outbreak in 25 years.
Read more: https://www.usatoday.com/story/news/health/2025/05/09/measles-cases-2025-states-outbreak-map/83371830007/
Link to (dynamic) weekly CDC REPORT - https://www.cdc.gov/measles/data-research/index.html#cdc_data_surveillance_section_4-map-of-measles-cases-in-2024-2025
Historical tracking -
*2023 data are preliminary and subject to change. †Elimination is defined as the absence of endemic measles transmission in a region for ≥ 12 months in the presence of a well-performing surveillance system.
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