Disease Alerts

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: On February 26, 2026, positive equine infectious anemia (EIA) results were confirmed by the Canadian Food Inspection Agency’s (CFIA) national reference laboratory for a horse located on a premises in the Municipal District of Bonnyville, Alberta. The horse had been tested by an accredited veterinarian at the owner’s request. No clinical signs of the disease were noted at the time of sampling.  A CFIA investigation is underway and as per program policy, movement controls have been placed on the infected horse and any on-premises contact animals. Initial reports indicate there are several other equines on the affected premises. Movement controls will remain until all disease response activities have been completed, including follow-up testing and ordering the destruction of confirmed cases. Trace-out activities may require the CFIA to undertake actions at additional premises as outlined in the current policy. Improved biosecurity protocols have been strongly recommended to the owners to help control the ongoing spread of EIA and protect our national herd.

Number Confirmed: 1; 
Number Exposed: 35; 

Horse 1: 
Age: 4; Gender: Mare; Breed: Quarter Horse (QH); Confirmation Date: 2/2/2026; Horse Status: Euthanized; 

Comments: A 4–year–old Quarter Horse mare in Riverside County was confirmed positive for Equine Infectious Anemia (EIA). Thirty-five (35) potentially exposed horse on the home premises has initially tested negative for EIA and will remain under quarantine until their sixty (60) day retest as per CDFA and USDA program requirements. CDFA has been on site with continued monitoring of the situation, and epidemiological tracing is ongoing.;

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Comments: Quarantined 1/27/26. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: Quarantined 1/29/26. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

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

Horse 1: 
Age: 7; Gender: Mare; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to initial Adams County, CO case in December.; Confirmation Date: 2/17/2026; Horse Status: Affected And Alive;

Number Confirmed: 1; 
Number Exposed: 12; 
Number Euthanized: 1; 
Facility Type: Training Facility; 
Comments: Testing of exposed horses on premises is pending; 
Previous Alerts: 4865

Number Confirmed: 1; 
Comments: A quarantine has been issued for the facility and exposed horses.;

Number Confirmed: 4; 
Number Exposed: 18; 
Facility Type: Training Facility; 

Horse 1: 
Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to positive; Confirmation Date: 1/29/2026; Horse Status: Quarantined; 

Horse 2: 
Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to positive; Confirmation Date: 1/29/2026; Horse Status: Quarantined; 

Horse 3: 
Age: 12; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to positive; Confirmation Date: 1/29/2026; Horse Status: Quarantined; 

Horse 4: 
Age: 8; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to positive, but euthanized due to a lung abscess, poor response to IV antibiotic therapy and poor prognosis before results were received; Confirmation Date: 1/16/2026; Horse Status: Deceased; 

Comments: These horses were tested due to exposure to positives in cases #4837 and #4816; Both cases were in Adams County. 

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Comments: Quarantined 12/8/25. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Comments: Hold order placed on 12/4/25. Quarantines will not be released until TAHC’s requirements are met. TAHC staff work closely with the owners and local veterinarians to monitor potentially exposed horses and implement biosecurity measures.;