County, district and community-level measles transmission in the United States in 2013−2025
Nature Medicine, Published online: 18 August 2026; doi:10.1038/s41591-026-04561-w Multiscale modeling shows that measles transmission at the school level in the United States crossed the epidemic threshold after 2022−2023, a shift not detectable by county-level or district-level surveillance.
We haven't written up this one. Nature Medicine has the full story — the link below goes straight to it.