Broomfield High students quarantined after measles outbreak

School district implements deep cleaning and remote learning support as two unvaccinated students test positive

Published on Mar. 4, 2026

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Two unvaccinated students at Broomfield High School in Colorado have been diagnosed with measles, prompting a 21-day quarantine for exposed, unvaccinated classmates. The school district is conducting deep cleaning and plans to offer remote learning support and potential immunization clinics to boost vaccination rates.

Why it matters

Measles outbreaks can spread quickly, especially in school settings with unvaccinated students. The high vaccination rate at Broomfield High, around 97%, is expected to limit the spread, but the quarantines and cleaning measures are necessary precautions to protect public health.

The details

After two unvaccinated students at Broomfield High School tested positive for measles, the school district has implemented a 21-day quarantine for any unvaccinated students who may have been exposed. The district is also conducting deep cleaning of the school facilities and plans to offer remote learning support and potentially host immunization clinics to boost vaccination rates among the student population.

  • The two measles cases were confirmed on March 3, 2026.

The players

Broomfield High School

A public high school in Broomfield, Colorado with a student population of around 1,500.

Boulder Valley Schools

The school district that oversees Broomfield High School and is coordinating the response to the measles outbreak.

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What’s next

The school district will monitor the situation closely and continue to work with local health authorities to ensure the safety of students and staff. The judge will decide on Tuesday whether to allow the unvaccinated students to return to school after the 21-day quarantine period.

The takeaway

This measles outbreak at Broomfield High highlights the importance of high vaccination rates in schools to prevent the spread of infectious diseases. The school's proactive response, including quarantines, cleaning, and potential immunization clinics, demonstrates its commitment to protecting the health and safety of the entire school community.