Key facts
- US measles cases reached 4,852 as of October 29, 2026.
- Hospitalizations linked to measles this year stand at 511, or 11% of cases.
- Cases in people aged 5-19 years totaled 2,010.
- 96% of 2026 cases were among unvaccinated or unknown vaccination status individuals.
The US Centers for Disease Control and Prevention (CDC) reported 4,852 confirmed measles cases nationwide as of October 29, 2026. This figure represents a significant increase from previous reporting periods and more than doubles the total cases recorded in 2025. The majority of infections, 96%, were among individuals who were unvaccinated or whose vaccination status was unknown. Hospitalizations linked to measles this year stand at 511, accounting for 11% of all reported cases. The CDC's data also indicated that people aged 5-19 years accounted for the largest number of cases, with 2,010 infections.