Health authorities in Colorado confirmed the third case of measles linked to schools in the Broomfield region, leading to its official classification as an outbreak. Todos patients are unvaccinated individuals, with the first two cases recorded in students from Broomfield High School and the third in a student from Broomfield Heights Middle School. The Departamento of Saúde Pública of the Colorado (CDPHE) issued warnings about potential exposure sites and reinforced the recommendation for immediate vaccination to prevent new infections.
The highly contagious disease requires strict contact monitoring. The cases emerged in February, with exposures identified on specific dates in educational institutions and other parts of the community.
Confirmed cases and connections between schools
The first two cases involve students from Broomfield High School who did not receive the triple viral vaccine (measles, mumps and rubella). The first patient exposed people at the school on February 20th and 23rd. The second case, also at the same school, generated additional exposures between February 24th and 27th.
The third case, confirmed in an Broomfield Heights Middle School student residing in Adams County, is a known contact of one of the previous cases. Essa direct connection justified the outbreak declaration by CDPHE.
Measures adopted in educational institutions
The Boulder Valley school district isolated high-touch areas and increased ventilation in Broomfield High School shortly after the first reports. Estudantes and unvaccinated employees were advised to remain in home quarantine for 21 days to break the chain of transmission.
At Broomfield Heights Middle School, similar actions are underway. The district has directly contacted affected families to implement additional health precautions.
Potential exposure locations and times
Authorities have released times and addresses where the virus may have circulated. Na Broomfield High School, exhibitions took place on several days in February. Para the third case, includes the school itself on the 17th, 18th and 19th of February, from 8:30 am to 6 pm, in addition to Broomfield Community Center on the 19th, from 7:35 pm to 10 pm.
Other locations are under investigation, with updates available on the CDPHE website. Pessoas present at these times must monitor symptoms for 21 days.
Public health recommendations for the population
Authorities emphasize that vaccination remains the main form of protection against measles. Indivíduos exposed, especially unvaccinated and babies under one year old, need to be aware of high fever, cough, runny nose and characteristic skin rashes.
If symptoms appear, it is essential to contact CDPHE at 720-653-3369 or your local health agency before seeking medical care and inform them of possible exposure. Isso prevents spread in hospital environments.
State context of measles cases
Colorado has recorded a significant increase in cases in recent years, with numbers well above the historical average. In 2025, 36 cases were confirmed, the highest volume in decades, which reflects national outbreak trends.
This year’s four cases, including those in Broomfield and other counties, highlight the importance of high vaccination coverage in school communities. Autoridades continue to investigate possible additional exposures to contain the spread.
Guidance for those who may have been exposed
People who frequented the listed locations should watch for signs of illness for a full three weeks. Measles is transmitted by air and remains contagious for hours in the environment.
- Monitor for fever, severe cough, red eyes, and white patches in the mouth.
- Avoid close contact with vulnerable groups, such as pregnant women and immunosuppressed people.
- Seek vaccination at health centers or clinics if you have not yet been immunized.
- Inform healthcare professionals about the risk of exposure when you arrive for your appointment.
Preventive actions underway
Public health teams notify direct contacts and assess post-exposure immunization needs. Selective quarantine aims to protect the school community and stop new transmissions.
CDPHE regularly updates the list of exposures and reinforces that mass vaccination is key to eliminating long-term risks.