Overview
- The CDC has recorded 5,182 measles cases nationwide so far this year, the highest U.S. total since 1991 and a sharp rise from 2,289 cases in 2025.
- Early November reports confirmed measles-related deaths in New York and in Wisconsin, where state health officials said an infant died and called the loss a vaccine-preventable tragedy.
- New York declared a state of emergency in October to free resources for outbreak control and states are expanding testing, case tracking, and vaccination outreach.
- Public health leaders link the resurgence to falling vaccine uptake driven by growing skepticism, and coverage notes high-profile anti-vaccine voices have helped erode confidence.
- Measles is highly contagious and can cause severe complications such as encephalitis, so officials warn that low immunization rates across many communities could prolong the outbreak and put infants and unvaccinated people at risk.