Source:
California Department of Food and Agriculture
Number Confirmed: 7;Number Suspected: 6;Facility Type: Showgrounds;Horse #1 --Age: 6; Gender: Mare; Breed: Warmblood (WB); Onset of Clinical Signs: 7/23/2021;Clinical Signs: Hind-end Weakness, limb edema, Nystagmus, Recumbency; Confirmation Date: 7/24/2021; Horse Status: Euthanized; Vaccination Status: Vaccinated;
Horse #2 --Age: 15; Gender: gelding; Breed: Warmblood (WB); Onset of Clinical Signs: 7/22/2021;Clinical Signs: Fever, neurological signs, ataxia, urine dribbling, cranial nerve deficits; Confirmation Date: 7/23/2021; Horse Status: Affected and Alive; Vaccination Status: Unknown ;
Notes: Update 7/30/2021; Original alerts 2139; 2141; 2145; The additional 15-year-old Warmblood mare from the index premises that attended and was asymptomatic at the Sonoma County event and displayed mild neurologic signs on July 27th has had a confirmed second negative EHV-1 test 24 hours later and returned home to the index premises in stable condition and continues to recover. The three other neurologic horses in isolation at the offsite veterinary hospital are also alive in stable condition, and were retested on July 29th and/or July 30th, and confirmed negative for EHV-1. One additional horse at the index premises, a 5-year-old Warmblood gelding, that attended the Sonoma County event and remains asymptomatic was tested on July 28th and confirmed positive for EHV-1 on July 30th, and has been isolated at the index premises. No clinical signs from any additional horses from the Sonoma County event or the home premises have been reported at this time. CDFA was onsite on the index premises on July 29th and continues to actively monitor this situation. The total number of confirmed cases in this incident are: 1 (one) confirmed EHM case (EHV-1 positive with neurologic signs), 1 (one) confirmed asymptomatic EHV-1 case, and 1 (one) confirmed febrile-only EHV-1 case, and 4 (four) presumptive positive cases that were subsequently confirmed negative. In total, one (1) horse in this incident has been euthanized and the other affected horses are alive and currently recovering under veterinary care. For more information go to: EHM Factsheet