Disease Alerts

Number Confirmed: 1; 
Number Suspected: 2; 
Number Exposed: 10; 
Number Euthanized: 1; 

Horse 1: 
Age: 13; Gender: Mare; Breed: Pony; Clinical Signs: Fever, recumbent; Confirmation Date: 9/26/2024; Horse Status: Euthanized

Horse 2: 
Age: 13; Gender: Gelding; Breed: Standardbred; Clinical Signs: Fever, head tilt; Horse Status: Recovered

Horse 3: 
Age: Yearling; Gender: Stallion; Breed: Pony; Clinical Signs: Nasal discharge, fever; Horse Status: Affected And Alive;

Number Confirmed: 1; 
Number Exposed: Unknown; 

Horse 1: 
Age: 2; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Onset of Clinical Signs: 9/15/2024; Clinical Signs: Fever, lethargy, anorexia, severe anemia; Horse Status: Deceased; 

Comments: Initial sample collected by attending veterinarian was confirmed positive for EIA at NVSL. Horse did not survive long enough to perform regulatory testing.;

Number Confirmed: 16; 
Facility Type: Racetracks
Comments: Multi-State Equine Infectious Anemia Outbreak in Quarter Horse Racehorses 

On September 20th and 24th, the National Veterinary Services Laboratories (NVSL) confirmed equine infectious anemia (EIA)-positive results in 4 Quarter Horse racehorses that were part of a group recently moved from racing in New Mexico to Los Alamitos in California. Several of the EIA-positive horses were showing clinical signs of EIA upon arrival to California. Testing of in-contact horses in California and epidemiologically-linked horses in Texas and New Mexico yielded an additional 12 EIA-positive horses. All 16 EIA-positive horses (7 in CA, 1 in NM, 8 in TX) were racing under the same trainer and attending the same series of sanctioned races in New Mexico in August and September. Additional exposed horses have been identified and are in the process of being tested in multiple states. The current epidemiological investigation indicates that spread of EIA among these horses occurred by iatrogenic transmission. Updates to the current situation will be posted as more information becomes available. Prior alerts 4020, 4042

Number Confirmed: 1; 
Number Exposed: 3; 
Facility Type: Farm; 

Horse 1: 
Age: 9; Gender: Gelding; Breed: Thoroughbred (TB); Usage: Trail Riding; Onset of Clinical Signs: 8/13/2024; Clinical Signs: ataxia, lethargy, fever, inappetence, lip twitching; Confirmation Date: 8/30/2024; Horse Status: Recovered; Vaccination Status: Unvaccinated;

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 

Horse 1: 
Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/24/2024; Clinical Signs: Recumbent; Confirmation Date: 10/9/2024; Horse Status: Euthanized; Vaccination Status: Status Unknown;

Number Confirmed: 1; 
Number Exposed: 10; 

Horse 1: 
Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/30/2024; Clinical Signs: Hind limb ataxia; Confirmation Date: 10/8/2024; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 

Horse 1: 
Age: 2; Gender: Filly; Breed: Standardbred; Onset of Clinical Signs: 9/29/2024; Clinical Signs: Found in lateral recumbency, no bladder or bowel control; Confirmation Date: 10/8/2024; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Number Confirmed: 1; 
Number Suspected: 1; 
Number Exposed: Unknown; 

Horse 1: 
Age: 5; Gender: Mare; Breed: Miniature Horse; Onset of Clinical Signs: 9/28/2024; Clinical Signs: hypermetric, seeking dark areas; Confirmation Date: 10/7/2024; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: Another unvaccinated 5-year-old Miniature Horse mare at the premises developed neurologic signs around the same time, including being down with an inability to rise, and subsequently died. She was not tested.;

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 

Horse 1: 
Age: 2; Gender: Filly; Breed: Standardbred; Onset of Clinical Signs: 9/25/2024; Clinical Signs: acting dull, lateral recumbency, seizures; Confirmation Date: 10/8/2024; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

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

Horse 1: 
Age: 4; Gender: Stallion; Breed: Paso Fino; Onset of Clinical Signs: 10/2/2024; Clinical Signs: Depression, elevated temperature, head shaking, muscle twitching, incoordination, weakness of hind limbs.; Confirmation Date: 10/9/2024; Horse Status: Recovering; Vaccination Status: Status Unknown;

Comments: This is the 6th confirmed case in Florida for 2024;