Outbreak Alerts: June 06, 2023 – Equine Herpesvirus- Neurologic in San Luis Obispo County, CA

Potomac Horse Fever

Confirmed Case(s) – Quarantine Released Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 42Comments: The positive horse has had two (2) consecutive negative tests seven (7) days apart. No additional cases were confirmed during the quarantine monitoring period. The quarantine has been released. See past published Outbreak Alerts: https://www.nwhorsesource.com/category/news/alerts PressNews …

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Outbreak Alerts: June 2, 2023 – Equine Herpesvirus- Neurologic in Stanislaus County, CA

Potomac Horse Fever

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 5Number Exposed: 28Facility Type: Private FacilityAge: 25Gender: GeldingBreed: Quarter Horse (QH)Clinical Signs: Fever, mild neurological signsConfirmation Date: 6/1/2023Horse Status: Affected And AliveComments: A 25-year-old Quarter Horse gelding in Stanislaus County displaying mild neurologic signs was confirmed positive for Equine Herpesvirus Myeloencephalopathy (EHM) secondary to Equine Herpesvirus-1 …

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Outbreak Alerts: May 30, 2023 – Equine Herpesvirus- Neurologic in San Luis Obispo County, CA

Potomac Horse Fever

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1Number Exposed: 42Facility Type: Boarding Facility Age: 19Gender: MareBreed: PaintUsage: Pleasure RidingOnset of Clinical Signs: 5/19/2023Clinical Signs: Ataxia, urine dribbling and bladder atony.Confirmation Date: 5/26/2023Horse Status: Affected And AliveVaccination Status: VaccinatedComments: May 30, 2023: A 19-year-old Paint mare in San Luis Obispo county displaying neurological signs was confirmed positive for …

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Outbreak Alerts: May 12, 2023 – Equine Herpesvirus- Neurologic in Umatilla County, OR

Potomac Horse Fever

Confirmed Case(s) – Official Quarantine Source: Oregon Department of Agriculture Number Confirmed: 1Comments: A horse from Umatilla County, OR, recently tested positive for Equine Herpesvirus (EHV-1). The horse is recovering from the illness. EHV-1 is a reportable disease, and veterinarians are legally responsible for immediately reporting all suspected cases to the Oregon …

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  • Wendy Kondo
  • Maria Danieli

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

Potomac Horse Fever

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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  • Maria Danieli

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

Potomac Horse Fever

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

Potomac Horse Fever

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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  • Wendy Kondo
  • Maria Danieli

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

Potomac Horse Fever

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

Potomac Horse Fever

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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  • Wendy Kondo

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

Potomac Horse Fever

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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  • Allison Blake
  • Wendy Kondo

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