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Outbreak Alert: March 06, 2026 – Equine Influenza in Gallatin County, MT

Equine Rhinitis Virus-B

Confirmed Case(s) – Voluntary Quarantine Source: Attending Veterinarian Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown; 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 Alert: February 23, 2026 – Equine Influenza in Laramie County, WY

Equine Rhinitis Virus-B

Confirmed Case(s) – No Quarantine Source: State Veterinarian Number Confirmed: 3; 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 current …

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Outbreak Alerts: December 24, 2025 – Equine Herpesvirus- Neurologic in Eddy & Dona Ana Counties, NM

Equine Rhinitis Virus-B

Confirmed Case(s) – Quarantine Released Source: State Veterinarian Eddy County: Number Confirmed: 2; Number Exposed: 3; Comments: All of our hold orders were released around 12/7 to 12/10. Our last quarantine was released on 12/21. As of right now, we have no active cases.; Previous Alerts: 4743 Dona Ana County: Number Confirmed: 1; Number Exposed: 2; Comments: All of our hold orders …

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Outbreak Alerts: December 23, 2025 – Equine Herpesvirus- Neurologic in Larimer County, CO

Equine Rhinitis Virus-B

Confirmed Case(s) – Quarantine Released Source: State Veterinarian’s Office Number Confirmed: 1; Number Exposed: Unknown; Comments: Notice of quarantine release; Previous Alerts: 4730, 4723 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 …

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Outbreak Alerts: December 19, 2025 – Equine Herpesvirus- Neurologic in Bowie County, TX

Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: Private Practitioner and State Animal Health Official Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown;  Horse 1: Breed: Donkey; Clinical Signs: The donkey was recently acquired from Bowie Livestock Sale. The donkey subsequently developed neurologic signs and was transferred to a referral hospital for care on 12/17/25.; This case is not associated …

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Outbreak Alerts: November 30, 2025 – Equine Herpesvirus- Neurologic in Pinal County, AZ

Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: Arizona Department of Agriculture Number Confirmed: 1Number Exposed: 8Number Euthanized: 1Facility Type: Private FacilityComments: No known direct exposure or epidemiologic link to any of the previously reported quarantined premises in Arizona nor any of the known exposure events in Texas or Oklahoma. For more information go to: https://www.equinediseasecc.org/equine-herpesvirus See past …

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Outbreak Alerts in MULTIPLE COUNTIES: November 25, 2025 – Equine Herpesvirus- Neurologic in Parker, Randall and Lee Counties, Texas

Equine Rhinitis Virus-B

Parker County Confirmed Case(s) – Official Quarantine Source: Private Practitioner and State Animal Health Official Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown; Number Euthanized: 1; Facility Type: Private Facility;  Horse 1: Breed: Quarter Horse (QH); Onset of Clinical Signs: 11/21/2025; Horse Status: Euthanized;  Comments: This case is associated with the EHM outbreak that originated at the Women’s Professional Rodeo Association (WPRA) World Finals and …

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Outbreak Alerts: November 22, 2025 – Equine Herpesvirus- Neurologic in Eddy County, NM

Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: State Veterinarian Number Confirmed: 2; Number Exposed: 3; Comments: One horse traveled to Waco for WPRA; this horse tested PCR positive on both nasal swab and blood and has exhibited fever and neurologic symptoms. The second horse had not traveled but became ill as a result of exposure to …

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Outbreak Alerts: November 21, 2025 – Equine Herpesvirus- Neurologic in McLennan County, TX

Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: Attending Veterinarian Number Suspected: Unknown; Number Exposed: Unknown; Facility Type: Veterinary Hospital; Comments: Hospitalized horse with consistent EHM signs with known exposure to Waco facility; For an up-to-date count of EHM cases tied to this outbreak, please visit HERE 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 …

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Outbreak Alerts: November 21, 2025 – Equine Herpesvirus- Neurologic in Hood County, TX

Equine Rhinitis Virus-B

Confirmed Case(s) – Official Quarantine Source: Private Practitioner Number Confirmed: 1; Number Suspected: Unknown; Number Exposed: Unknown; Facility Type: Private Facility; Comments: This case is associated with the EHM outbreak that originated at the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race event; For an up-to-date count of EHM cases tied to this outbreak, please visit HERE For …

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