US measles cases top 4,852 in 2026, more than double last year
The gist
The CDC confirmed 4,852 US measles cases in 2026, more than double 2025's 2,289 total.
Five deaths, all in Pennsylvania, sit at the center of a federal-state counting dispute.
How it unfolded
- Nov 10, 2025The Pan American Health Organization announced the Region of the Americas had lost its verification as free of endemic measles transmission.
- Jul 22, 2026Delaware's Division of Public Health reported two more positive measles cases, bringing the state total to four.
- Aug 25, 2026Pennsylvania's health department announced two measles deaths, the first in the state.