Overview
- The CDC reports 1,281 U.S. measles cases for 2026 as of March 5, with 93% in unvaccinated people, reflecting sustained nationwide transmission.
- Colorado confirms 10 cases linked to a Broomfield school outbreak, all in unvaccinated children ages 5–17, with a new exposure alert for an Arvada sports bar and 21-day school quarantines for unvaccinated contacts.
- England has 235 laboratory-confirmed cases up to March 9, concentrated in Enfield (80), Birmingham (43) and Haringey (15), with UKHSA noting spread in every region and local schools warning unvaccinated pupils may be excluded after exposure.
- NSW Health counts 60 cases between Jan 1, 2025 and Mar 7, 2026, most linked to travel in Southeast Asia but with several locally acquired infections including cases with no identified source in Sydney.
- Health agencies highlight measles’ extreme contagiousness with airborne survival up to two hours and advise post‑exposure MMR within 72 hours or immunoglobulin within six days where indicated.