Disease Alerts

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;

Number Confirmed: 1; 
Number Exposed: 26; 

Horse 1: 
Age: 17; Gender: Gelding; Breed: Warmblood (WB); Onset of Clinical Signs: 4/1/2026; Horse Status: Affected And Alive; 

Comments: The New Jersey Department of Agriculture has quarantined a property in Burlington County after one horse developed the highly infectious equine herpes myeloencephalopathy (EHM). The horse, a 17-year-old warmblood gelding, developed acute clinical signs on April 01, 2026, and is currently undergoing hospitalization for care. The twenty-six (26) remaining horses on the premises are under quarantine and being monitored for sickness. No recent horse movement has occurred by this herd, making the risk of disease spread from this case very low. There are no known connections between this EHM case and the first Burlington County case in January 2026.;

Number Confirmed: 1; 
Number Suspected: 1; 
Number Exposed: 13; 
Facility Type: Private Facility; 
Comments: This is the 6th confirmed premises for Florida in 2026.;

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

Horse 1: 
Onset of Clinical Signs: 4/9/2026; Confirmation Date: 4/10/2026; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;

Number Confirmed: 1; 
Number Exposed: 4; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 5; Gender: Mare; Breed: Morgan; Onset of Clinical Signs: 4/7/2026; Clinical Signs: Mucoid nasal discharge, occasional cough, lymphadenopathy, fever, decreased appetite; Confirmation Date: 4/9/2026; Horse Status: Recovering; Vaccination Status: Vaccinated;

Comments: Also, PCR positive for EHV-4 and ERBV;

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

Horse 1: 
Age: 14; Gender: Mare; Breed: Kentucky Mountain Horse; Onset of Clinical Signs: 4/6/2026; Clinical Signs: Cough; Confirmation Date: 4/9/2026; Horse Status: Recovering; Vaccination Status: Status Unknown;

Number Confirmed: 1; 
Number Exposed: 20; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 12; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/27/2026; Clinical Signs: Post-vaccinal fevers, nasal discharge; Confirmation Date: 3/31/2026; Horse Status: Recovering; Vaccination Status: Vaccinated;