01/12/2025
Equine Herpes Virus update: The State Veterinarian's Office has confirmed one case of EHV-1 in a horse in Larimer County. This horse recently traveled to an event in Waco, Texas, developed a mild fever, tested positive for EHV-1 on November 20, and has been placed under quarantine. Other exposed horses are also under surveillance.
This situation is a reminder that while the virus is a concern, practicing excellent biosecurity, including movement restrictions, is our most effective defense against further spread.
What you need to do now:
🏇 Equine movement and event attendance: Avoid attending equine events where horses are commingled. Even asymptomatic horses can shed the virus.
☣️ Practice Strict Biosecurity: This is vital. Avoid sharing equipment, water, or tack, and maintain distance between horses. Wash your hands and disinfect surfaces and equipment diligently.
🐴 Monitor Your Horse Twice Daily: Look for signs like a fever (above 101.5°F), nasal discharge, or any neurologic symptoms (difficulty walking, lethargy, or inability to stand).
📢 Report Immediately: If you notice any concerning signs, especially a fever or neurologic symptoms, contact your veterinarian immediately. Veterinarians must report acute neurologic disease directly to our office.
Horse owners whose animals traveled to Texas or Oklahoma should immediately contact our office at 303-869-9130 or [email protected] for specific guidance on isolation and monitoring.
Read more now at ag.colorado.gov/ehv
