Alerts

Source: Arizona Department of Agriculture and United States Department of Agriculture Animal and Plant Health Inspection Service Confirmed Case(s) – Official Quarantine Number Confirmed: 2Number Exposed: 60Facility Type: Private FacilityComments: On October 31, 2025, the National Veterinary Services Laboratories in Ames, Iowa, confirmed findings of vesicular stomatitis New Jersey virus (VSNJV) in horses on …

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Source: Attending Veterinarian Confirmed Case(s) – No Quarantine Number Confirmed: 2Number Suspected: UnknownNumber Exposed: UnknownFacility Type: Veterinary HospitalComments: Two independent cases; not located on the same farm. 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 …

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Source: State Veterinarian’s Office Number Confirmed: 1Number Exposed: Unknown Facility Type: Private Facility Horse 1: Age: 3; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 10/21/2025; Clinical Signs: Ataxia Fasciculation; Confirmation Date: 10/29/2025; 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 Equine Disease Communication CenterUpdates on current disease outbreaks are listed on …

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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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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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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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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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