The Northwest Horse Source
March 19th, 2023
This alert is an equine related disease outbreak or other emergency, disaster, or critical announcement in our distribution area.

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

Potomac Horse Fever
Written by: Press

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 UnknownComments: A 17-year-old polo horse mare at a polo facility in …

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

Potomac Horse Fever
Written by: Press

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 for Equine Herpesvirus Myeloencephalopathy (EHM) secondary to Equine Herpesvirus-1 (EHV-1, …

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Alerts regularly include Washington, Oregon, Idaho, California, and sometimes Utah, Nevada, Wyoming and Arizona.
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