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New Measles Case Prompts Exposure Warnings in Larimer County
Unvaccinated adult visited two health facilities, potentially exposing others to measles virus
Apr. 14, 2026 at 11:04pm
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A glowing neon syringe symbolizes the urgent need for vaccination to prevent the spread of measles in Larimer County.Fort Collins TodayA new measles case in Weld County, Colorado has led to potential exposure warnings for people who visited two health care facilities in Larimer County on Monday afternoon. The unvaccinated adult who was a close contact of a known measles case visited an urgent care clinic and an emergency department, potentially exposing others to the highly contagious virus.
Why it matters
Measles outbreaks have been on the rise in recent years, driven in part by lower vaccination rates in some communities. This latest case highlights the importance of vaccination in preventing the spread of measles, which can have serious complications, especially for young children, pregnant women, and those with weakened immune systems.
The details
The potential exposure windows are: UCHealth Primary Care Johnstown from 3:15-5:20 p.m. and Banner Fort Collins Medical Center emergency department from 3:35-6:10 p.m. on Monday, April 14th. Unvaccinated individuals who visited these facilities during those times may have been exposed and should seek medical care immediately. Getting the measles vaccine within 72 hours of exposure can reduce the chances of getting sick, while an antibody product may still help if administered within 6 days.
- On Monday, April 14th, an unvaccinated adult who was a close contact of a known measles case in Weld County visited two health care facilities in Larimer County.
- The potential exposure windows were from 3:15-5:20 p.m. at UCHealth Primary Care Johnstown and from 3:35-6:10 p.m. at Banner Fort Collins Medical Center emergency department.
The players
Colorado Department of Public Health and Environment
The state health department that confirmed the new measles case and issued the exposure warnings.
What’s next
The state health department is asking unvaccinated people with a known measles exposure to quarantine for 21 days. Anyone who develops symptoms after a known measles exposure should call ahead before seeking medical care.
The takeaway
This latest measles case underscores the importance of vaccination, as the virus can stay airborne for up to two hours after an infected person leaves a location. Prompt medical attention is crucial for unvaccinated individuals who may have been exposed to reduce the risk of serious complications.
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