Colorado's measles outbreak grows to 10 cases, linked to Broomfield High School
Colorado has reached 10 measles cases in 2026, all among unvaccinated youths age 5–17, connected to a Broomfield High School outbreak. Two new cases were confirmed and another is under investigation; several patients live with someone previously diagnosed. An exposure at Bout Time Pub Grill in Arvada has been identified. Health officials urge vaccination and note that MMR vaccination within 72 hours of exposure can prevent or lessen illness. The outbreak spans Adams, Arapahoe, Broomfield and Weld counties, as nationwide measles cases rise (1,281 in 2026) with the majority among the unvaccinated. Public health guidance emphasizes vaccination and early care if exposure occurs.