Equine Herpesvirus- Neurologic Archives – Page 2 of 3

Outbreak Alerts: May 10, 2023 – Equine Herpesvirus- Neurologic in Modoc County, CA

July 29, 2024May 11, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 6Facility Type: Private FacilityAge: 8Gender: MareBreed: Quarter Horse (QH)Usage: Barrel RacingOnset of Clinical Signs: 5/3/2023Clinical Signs: Acute hind limb ataxia, dragging hind feet, loss of urine bladder control.Confirmation Date: 5/8/2023Horse Status: Affected And AliveComments: An 8-year-old Quarter Horse mare in Modoc County displaying acute neurologic …

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Outbreak Alerts: April 28, 2023 – Equine Herpesvirus- Neurologic in Snohomish County, WA

April 18, 2024April 30, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: Washington State Department of Agriculture Number Confirmed: 1Number Exposed: 30Facility Type: StableAge: 20Gender: MareOnset of Clinical Signs: 4/19/2023Clinical Signs: Urinary incontinence, fecal incontinence, lack of anal/tail tone, Grade 3 ataxia, Mild facial nerve paresis (unilateral)Horse Status: RecoveringVaccination Status: VaccinatedComments: When the horse presented with neurologic signs, it was immediately placed in a quarantine barn …

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Outbreak Alerts: April 27, 2023 – Equine Herpesvirus- Neurologic in Snohomish County, WA

April 18, 2024April 27, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: State Veterinarian Office. Number Confirmed: 1Number Exposed: UnknownFacility Type: Veterinary HospitalComments: The horse, which was brought in for throat mass and went back to stable then returned for neurologic signs diagnosed as EHV-1, is under veterinary care. State is in contact with the stable and veterinary clinic. Quarantine …

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Outbreak Alerts: April 4, 2023 – Equine Herpesvirus- Neurologic in Monterey County, CA

April 18, 2024April 14, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 25Facility Type: Private FacilityAge: 25Gender: GeldingBreed: Quarter Horse (QH)Onset of Clinical Signs: 4/10/2023Clinical Signs: Fever of two days duration followed by acute severe neurological signs. Confirmation Date: 4/13/2023Horse Status: EuthanizedComments: A 25-year-old Quarter Horse gelding in Monterey County displaying fever followed by acute neurologic signs was …

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Outbreak Alerts: April 4, 2023 – Equine Herpesvirus- Neurologic in Riverside County, CA

April 18, 2024April 4, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 36Age: 18Gender: GeldingBreed: Warmblood (WB)Onset of Clinical Signs: 3/272023Clinical Signs: progressive hind end ataxia, inability to urinate, recumbentConfirmation Date: 4/4/2023Horse Status: EuthanizedComments: A 18-year-old Warmblood gelding in Riverside County displaying neurologic signs was confirmed positive for Equine Herpesvirus Myeloencephalopathy (EHM) secondary to Equine Herpesvirus-1 …

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Outbreak Alerts – UPDATE: March 22, 2023 – Equine Herpesvirus- Neurologic in Riverside County, CA

April 18, 2024March 22, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 2Number Exposed: 600Age: 12Gender: MareBreed: Argentinian Polo HorseUsage: PoloOnset of Clinical Signs: 3/19/2023Clinical Signs: mild neurologicConfirmation Date: 3/21/2023Horse Status: Affected And AliveComments: A 12-year-old Argentinian polo horse mare displaying mild neurological signs has been confirmed positive for EHM secondary to EHV-1 (non-neuropathogenic strain). The mare was immediately …

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Outbreak Alerts: March 16, 2023 – Equine Herpesvirus- Neurologic in Riverside County, CA

April 18, 2024March 18, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 9Facility Type: Event CenterAge: 17Gender: MareBreed: Polo ponyUsage: PoloOnset of Clinical Signs: 3/11/2023Clinical Signs: Dragging pelvic limb 2 days prior to decreased appetite, ataxia, and reactivity on cervical spinal palpation, then found recumbent and unable to rise the following morning. Afebrile.Horse Status: EuthanizedVaccination Status: Status …

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Outbreak Alerts: March 14, 2023 – Equine Herpesvirus- Neurologic in Los Angeles County, CA

April 18, 2024March 18, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Suspected: UnknownNumber Exposed: 61Facility Type: Private Facility Age: 19Gender: GeldingBreed: SaddlebredOnset of Clinical Signs: 3/13/2023Clinical Signs: Acute ataxia and urine dribblingConfirmation Date: 3/14/2023Horse Status: EuthanizedComments: A 19-year-old Saddlebred gelding at a private boarding facility in Los Angeles County displaying acute neurological signs was confirmed positive …

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Outbreak Alerts: March 10, 2023 – Equine Herpesvirus- Neurologic in San Luis Obispo County, CA

April 18, 2024March 12, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Quarantine Released Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 26 Comments: No additional cases were confirmed, and the quarantine on this premises has been released.Previous Alerts: 2917 See past published Outbreak Alerts: https://nwhorsesource.com/category/news/alerts Equine Disease Communication CenterUpdates on current disease outbreaks are listed on our EDCC website as …

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Outbreak Alerts: February 01, 2023 – Equine Herpesvirus- Neurologic in Flathead County, MT

April 18, 2024February 3, 2023 by Equine Disease Communication Center

Confirmed Case(s) – Official Quarantine Source: Montana Department of Livestock Number Confirmed: 5Clinical Signs: Neurologic signsComments: Following multiple confirmed cases of equine herpesvirus myeloencephalopathy (EHM) in Flathead County, the Montana Department of Livestock is recommending that horse owners and event coordinators in the Flathead Valley limit travel and cancel events that bring horses …

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