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Source: United States Department of Agriculture Animal and Plant Health Inspection Service Confirmed Case(s) – Official Quarantine Number Confirmed: 1; Comments: Since the last situation report (10/31/2025), there has been one (1) new confirmed positive equine premises identified in Arizona (Gila County – new affected county). All confirmed cases in the 2025 outbreak …
Kiowa County, OK Source: State Veterinarian Confirmed Case(s) – No Quarantine Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown; Facility Type: Private Facility; Horse 1: Age: 5; Gender: Mare; Breed: Appaloosa; Usage: Breeding; Onset of Clinical Signs: 10/20/2025; Clinical Signs: Ataxia, loss of balance, falling forward; Confirmation Date: 11/4/2025; Horse Status: Unknown; Vaccination Status: Unvaccinated; Carter and Love County, OK Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown; Horse 1: Age: 3; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Ranch work; Onset of Clinical Signs: 10/16/2025; Clinical Signs: Anxiety, …
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 …
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 …
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 …
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 …
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, …
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 …
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 …
Source: State Veterinarian Confirmed Case(s) – No Quarantine Number Confirmed: 1Number Exposed: UnknownNumber Euthanized: 1Facility Type: Farm Horse 1: Age: 7Gender: MareBreed: Quarter Horse (QH)Usage: BreedingOnset of Clinical Signs: 10/18/2024Clinical Signs: Lateral recumbency and unable to rise, stiff in hind limbsConfirmation Date: 11/14/2024Horse Status: EuthanizedVaccination 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 …