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Disease Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



Alachua County, FL
Outbreak Identifier: 6316
Alert ID: 3794
July 23, 2024
Confirmed Case(s) - No Quarantine

FDACS Veterinary Medical Officer

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

Horse 1: 
Age: 12; Gender: Mare; Breed: Pony; Onset of Clinical Signs: 6/21/2024; Clinical Signs: Depression, incoordination, weakness in hind limbs, inability to stand.; Confirmation Date: 7/19/2024; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Comments: This is Florida's 18th case of EEE for 2024;

Holmes County, FL
Outbreak Identifier: 6315
Alert ID: 3793
July 23, 2024
Confirmed Case(s) - Official Quarantine

FDACS Veterinary Medical Officer

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

Horse 1: 
Age: 17; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Rodeo; Onset of Clinical Signs: 7/17/2024; Clinical Signs: Facial swelling, enlarged submandibular lymph nodes; Confirmation Date: 7/22/2024; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Comments: This is Florida's 34th case for 2024;

City of Suffolk County, VA
Outbreak Identifier: 6314
Alert ID: 3792
July 22, 2024
Confirmed Case(s) - No Quarantine

Attending Veterinarian

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

Horse 1: 
Age: 8; Gender: Mare; Breed: Arabian; Onset of Clinical Signs: 7/9/2024; Clinical Signs: Fever -105.2 F, Tachycardia/Tachypnea, Depression/Somnolence, Severe (5/5) hindlimb ataxia, Facial N paralysis; Confirmation Date: 7/12/2024; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Kalamazoo County, MI
Outbreak Identifier: 6313
Alert ID: 3791
July 22, 2024
Confirmed Case(s) - Voluntary Quarantine

Michigan Department of Agriculture and Rural Development

Number Confirmed: 1; 
Number Exposed: 4; 

Horse 1: 
Age: 22; Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 7/16/2024; Clinical Signs: Fever, nasal discharge; Confirmation Date: 7/18/2024; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;

Hunt County, TX
Outbreak Identifier: 6312
Alert ID: 3790
July 18, 2024
Confirmed Case(s) - Official Quarantine

Texas Animal Health Commission

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

Horse 1: 
Horse Status: Euthanized; 

Comments: Texas Animal Health Commission (TAHC) officials confirmed equine infectious anemia in a quarter horse on a Hunt County premises. The premises has been quarantined and will not be released until TAHC’s requirements are met. TAHC staff are working closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

Ellis County, TX
Outbreak Identifier: 6311
Alert ID: 3789
July 18, 2024
Confirmed Case(s) - Official Quarantine

Texas Animal Health Commission

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

Horse 1: 
Horse Status: Euthanized; 

Comments: Texas Animal Health Commission (TAHC) officials confirmed equine infectious anemia in a quarter horse on an Ellis County premises. The premises has been quarantined and will not be released until TAHC’s requirements are met. TAHC staff are working closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

El Paso County, TX
Outbreak Identifier: 6310
Alert ID: 3788
July 18, 2024
Confirmed Case(s) - Official Quarantine

Texas Animal Health Commission

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

Horse 1: 
Horse Status: Euthanized; 

Comments: Texas Animal Health Commission (TAHC) officials confirmed equine infectious anemia in a quarter horse on an El Paso County premises. The premises has been quarantined and will not be released until TAHC’s requirements are met. TAHC staff are working closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

Région du Saguenay, QC
Outbreak Identifier: 6309
Alert ID: 3787
July 16, 2024
Investigation Initiated

MAPAQ

Number Exposed: Unknown; 
Facility Type: Stable; 

Horse 1: 
Age: 20; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 6/26/2024; Clinical Signs: Altered mental state, seemed sedated, facial nerve damage on right and left, head tilted intermittently to the left, very slight proprioceptive ataxia of the thoracic limbs especially. Delayed grasping of food and mastication. No fever.; Confirmation Date: 7/12/2024; Horse Status: Recovering; Vaccination Status: Undervaccinated;

Comments: Possible case of WNV upon CFIA definition case with compatible clinical signs and positive ELISA IgG. IgM is negative. 

Muskegon County, MI
Outbreak Identifier: 6308
Alert ID: 3786
July 15, 2024
Confirmed Case(s) - Voluntary Quarantine

Michigan Department of Agriculture and Rural Development

Number Confirmed: 1; 

Horse 1: 
Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 7/4/2024; Clinical Signs: fever, nasal discharge, submandibular swelling; Confirmation Date: 7/10/2024; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Montréal-Nord, QC
Outbreak Identifier: 6307
Alert ID: 3785
July 13, 2024
Confirmed Case(s) - Voluntary Quarantine

MAPAQ

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

Horse 1: 
Age: Suckling Foal; Gender: Filly; Breed: Quarter Horse (QH); Onset of Clinical Signs: 6/17/2024; Clinical Signs: Past 3 weeks: a decline in energy, intermittent cough, and weight loss. Past week: worsening of the general condition, less appetite. Past 2 days, profuse diarrhea.; Confirmation Date: 7/10/2024; Horse Status: Deceased; 

Comments: Feces: Salmonella group B;