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Outbreak Alert

Outbreak Alerts: September 30, 2025 – West Nile Virus – Mesa County, CO

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Equine Rhinitis Virus-B

Source: State Veterinarian’s Office Number Confirmed: 1; Number Exposed: 7; Facility Type: Private Facility;  Horse 1: Age: 3; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Pleasure Riding; Onset of Clinical Signs: 9/13/2025; Clinical Signs: Weakness Ataxia Fasciculation; Confirmation Date: 9/29/2025; Horse Status: Recovering; Vaccination Status: Undervaccinated; For more information about West Nile Virus go to: WNV factsheet.  See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on …

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Outbreak Alerts: August 27, 2025 – West Nile Virus – Johnson County, WY

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Equine Rhinitis Virus-B

Source: State Veterinarian’s Office Confirmed Case(s) – No Quarantine Number Confirmed: 1 For more information about West Nile Virus go to: WNV factsheet.  See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on our EDCC website as they occur and will include the date listed, …

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Outbreak Alerts: August 06, 2025 – Equine Infectious Anemia – Wichita County, TX

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Equine Rhinitis Virus-B

Source: Texas Animal Health Commission Confirmed Case(s) – Official Quarantine Number Confirmed: 2Number Suspected: UnknownNumber Exposed: UnknownNumber Euthanized: 1Comments: General notes: Quarantined 5/7/25. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures. For more information:  https://www.equinediseasecc.org/equine-infectious-anemia …

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Outbreak Alerts: August 06, 2025 – Equine Infectious Anemia – Kaufman County, TX

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Equine Rhinitis Virus-B

Source: Texas Animal Health Commission Confirmed Case(s) – Official Quarantine Number Confirmed: 1Number Suspected: UnknownNumber Exposed: UnknownNumber Euthanized: 1Comments: General notes: Quarantined 4/23/25. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures. For more information:  https://www.equinediseasecc.org/equine-infectious-anemia …

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Outbreak Alerts: August 05, 2025 – West Nile Virus – Las Animas County, CO

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Equine Rhinitis Virus-B

Source: State Veterinarian’s Office Confirmed Case(s) – No Quarantine Number Confirmed: 1Number Suspected: 1Number Exposed: 3Facility Type: Farm Horse 1: Age: 6; Gender: Mare; Breed: Standardbred; Usage: Pleasure Riding; Onset of Clinical Signs: 7/24/2025; Clinical Signs: Weakness Ataxia; Confirmation Date: 7/29/2025; Horse Status: Deceased; Vaccination Status: Unvaccinated For more information about West Nile Virus go to: WNV factsheet.  See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are …

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Outbreak Alerts: July 03, 2025 – West Nile Virus – Douglas County, CO

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Equine Rhinitis Virus-B

Source: State Veterinarian’s Office Confirmed Case(s) – No Quarantine Number Confirmed: 1Number Suspected: 1Number Exposed: UnknownFacility Type: Private Facility Horse 1: Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Horse Show; Onset of Clinical Signs: 6/30/2025; Clinical Signs: Grade 3-4 Ataxia of hind limbs.; Confirmation Date: 7/3/2025; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated; For more information about West Nile Virus go to: WNV factsheet.  See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts …

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Outbreak Alert: June 18, 2025 – Equine Influenza in Goshen County, WY

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Equine Rhinitis Virus-B

Confirmed Case(s) – Voluntary Quarantine Source: State Veterinarian Number Confirmed: 2 Number Suspected: 6 Facility Type: Farm For more information about Equine Influenza, go to https://www.equinediseasecc.org/equine-influenza See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on our EDCC website as they occur and will include the date listed, disease name, location and …

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Outbreak Alerts: June 14, 2025 – Equine Herpesvirus- Neurologic in Teton County, WY

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Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: State Veterinarian Number Confirmed: 2 Number Exposed: Unknown Facility Type: Farm For more information go to: https://www.equinediseasecc.org/equine-herpesvirus See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on our EDCC website as they occur and will include the date listed, disease name, location and current …

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Multiple Outbreak Alerts in TEXAS: May 02, 2025 – Equine Infectious Anemia

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Equine Rhinitis Virus-B

Source: Texas Animal Health Commission General notes: Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures. Wise County, TX Number Confirmed: 1Number Suspected: UnknownNumber Exposed: Unknown Number Euthanized: 1 Montague County, TX Number Confirmed: 1Number Suspected: UnknownNumber …

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Outbreak Alerts: April 17, 2025 – Equine Infectious Anemia – Douglas County, CO

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Equine Rhinitis Virus-B

Source: State Veterinarian Confirmed Case(s) – Official Quarantine Number Confirmed: 1Number Suspected: 1 Number Exposed: Unknown Facility Type: Private Facility  Horse 1: Age: 14; Gender: Mare; Breed: Quarter Horse (QH); Usage: Breeding; Clinical Signs: tested due to iatrogenic exposure; Confirmation Date: 4/10/2025; Horse Status: Quarantined For more information:  https://www.equinediseasecc.org/equine-infectious-anemia See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on our EDCC website as …

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