Storyline
2026 US measles outbreak
One page that accretes the verified record as the story develops. Every fact keeps its date and its sources.
1 DAYS
22 FACTS
1 EVENTS
1 SOURCES
FIRST ENTRY JUL 25
JUL 25 · Day 1
Seven US states identified as hot spots in 2026 record measles outbreak
South Carolina reported 670 measles cases in 2026.
A Johns Hopkins University tracker that compiles state and local health data signaled the new measles record earlier in the week.
Seven states — South Carolina, Utah, Texas, Virginia, Florida, Pennsylvania and Arizona — represent more than 84% of total U.S. measles cases.