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WYOMING LIVESTOCK BOARD
Animal Health
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Equine Herpes Virus update:
The Wyoming Livestock Board (WLSB) currently has not confirmed a case of EHV-1 in the state. A Colorado horse confirmed with EHV-1 participated in Wyoming events in Cheyenne, Wheatland, and Casper, November 15-16. This horse recently traveled to an event in Waco, Texas, developed a mild fever, and tested positive for EHV-1 on November 20.
While the EHV exposure is concerning, practicing excellent biosecurity, including movement restrictions, is our best protection against further spread.
What you need to do now:
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Equine movement and event attendance: Avoid attending events where horses are commingled.
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Practice strict biosecurity: Avoid sharing equipment, water, or tack, and maintain distance between horses. Wash your hands and disinfect surfaces and equipment diligently.
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Monitor your horse twice daily: Look for signs of fever and temp your horse if you recently traveled to an event or are going to travel to one (above 101.5F). Watch for nasal discharge or any neurologic symptoms (difficulty walking, lethargy, or inability to stand).
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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 307.777.7515 or 307.840.1389, or email lsbforms-applications@wyo.gov for specific guidance on isolation and monitoring.
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