Information:

CURRENT EVENTS	RESOURCES
Equine Herpesvirus Myeloencephalitis Outbreak in Barrel and Roping Horses	AAEP/EDCC EHV-1 Updates (11/25/2025)
Vesicular Stomatitis in Arizona	Situation Report (12/09/2025)

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Biosecurity:

• Biosecurity Risk Calculator Tool
• Biosecurity Guidance for Equine Facilities and Events

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Diseases:
Ⓡ = reportable to Utah State Veterinarian’s Office

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Equine Neurologic Diseases:

West Nile Virus (WNV) Ⓡ

• • Equine WNV Information
  • Human WNV Information

Equine Herpesvirus Myeloencephalopathy (EHM or EHV-1) Ⓡ

• • EHM Prevention Measures for Horse Owners
  • USDA APHIS EHM Resources
  • American Association of Equine Practitioners Fact Sheet

Western/Eastern/Venezuelan Equine Encephalitis Ⓡ

• • USDA Information

Equine Protozoal Myeloencephalitis (EPM) Ⓡ

• • EDCC EPM Factsheet

Vesicular Stomatitis (VSV) Ⓡ

• • USDA APHIS VSV Resources
  • EDCC VSV Factsheet

Equine Reproductive Diseases

Equine Viral Arteritis (EVA) Ⓡ

Information

• • USDA APHIS EVA Resources
  • CSU EVA Info

Utah Policy and Forms

• • Equine Viral Arteritis (EVA) Rule (R58-23)
  • EVA Approved Facility Request Form
  • EVA Stallion Registry Form

Equine Piroplasmosis Ⓡ

• • EDCC Piro Factsheet

Contagious Equine Metritis (CEM) Ⓡ

• • USDA APHIS CEM Resources
  • EDCC CEM Factsheet

Equine Infectious Anemia (EIA) Ⓡ

Information

• • USDA APHIS EIA Resources
  • EDCC EIA Factsheet

Utah Policy

• • Utah EIA Rule (R58-22)

African Horse Sickness Ⓡ

• • USDA APHIS AHS Resources
  • African Horse Sickness (Iowa State)

Strangles (Streptococcus equi Infection)

• • EDCC Strangles Factsheet

Pigeon Fever (Corynebacterium pseudotuberculosis infection)

• • EDCC Pigeon Fever Factsheet

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Additional Resources:

• Extended Equine CVIs (EECVIs)
• Utah Extension Equine Vaccinations
• Disaster Preparedness