Disease Alerts

Number Confirmed: 1; 
Facility Type: Private Facility; 
Comments: Under vet care. Recovering.;

Number Confirmed: 1; 
Number Exposed: 4; 
Facility Type: Private Facility; 
Comments: Horse under vet care. Purchased another equid at the livestock market recently and brought home.;

Number Confirmed: 1; 

Horse 1: 
Age: 5; Gender: Gelding; Breed: Quarter Horse (QH); Confirmation Date: 4/20/2026; Horse Status: Affected And Alive; 

Comments: A 5–year–old Quarter Horse gelding in Santa Clara County was confirmed positive for Equine Infectious Anemia (EIA). The gelding has been quarantined on premises with no additional exposed horses on the property. Epidemiological tracing is ongoing, but transmission is suspected to be iatrogenic.;

Number Confirmed: 1; 
Number Exposed: 35; 
Comments: The thirty-five (35) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; 
Previous Alerts: 4890

Number Confirmed: 1; 
Number Suspected: 15; 
Number Exposed: 11; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 13; Gender: Gelding; Breed: Spotted Saddle Horse; Usage: Pleasure Riding; Onset of Clinical Signs: 3/9/2026; Clinical Signs: Fever (102), serosanguinous nasal discharge. Several other horses exhibited more severe symptoms including high fever, coughing, purulent nasal discharge, enlarged lymph nodes (some ruptured), with one horse experiencing vasculitis.; Confirmation Date: 3/13/2026; Horse Status: Recovered; Vaccination Status: Unvaccinated;

Comments: To date 15 horses out of 26 on premises have shown some signs of respiratory illness.;

Number Confirmed: 1; 
Number Suspected: 2; 
Number Exposed: Unknown; 
Facility Type: Private Facility; 

Horse 1: 
Age: 2; Gender: Stallion; Breed: Draft; Confirmation Date: 4/17/2026; Horse Status: Affected And Alive;

Number Confirmed: 2; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 4; Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 4/10/2026; Clinical Signs: Nasal discharge; Confirmation Date: 4/17/2026; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Horse 2: PCR positive

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: 42; 
Facility Type: Event Center; 

Horse 1: 
Age: 21; Gender: Gelding; Breed: Thoroughbred (TB); Usage: Horse Show; Onset of Clinical Signs: 4/17/2026; Clinical Signs: The gelding displayed clinical signs including lethargy, distal limb edema, and acute onset ataxia. He was evaluated at HITS Culpeper by the referring veterinarian and was referred to an equine hospital. The horse was recumbent on arrival, and was admitted directly to the isolation unit by dedicated personnel. The horse was subsequently euthanized. Forty-two horses in Barn 5 at the showgrounds have been quarantined by the state veterinarian; Horse Status: Euthanized

UPDATE: The horse's home farm (13 horses) in Loudoun County, VA has been quarantined by the state veterinarian. 

Number Confirmed: 1; 
Number Exposed: 11; 
Facility Type: Private Facility; 

Horse 1: 
Age: 5; Gender: Gelding; Breed: Standardbred; Usage: Pleasure Riding; Clinical Signs: Neurologic, ataxic; Confirmation Date: 2/25/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: Quarantine released April 17, 2026; 
Previous Alerts: 4895

Number Confirmed: 1; 
Number Suspected: 3; 
Facility Type: Private Facility;