US records 2,318 measles cases in 2026 — worst year since 1991

The US has recorded 2,318 measles cases in 2026, surpassing the full-year 2025 record of 2,289 infections with five months still remaining. The CDC confirmed it is the worst measles year since the disease was declared eliminated in 2000 and the highest case count since 1991. The country crossed the 2,000-case threshold in June before climbing still higher in July.