Disease Alerts

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: On June 4, 2025, 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 Calgary, Alberta. The horse had been tested by an accredited veterinarian at the owner’s request to fulfill a facility biosecurity requirement. 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 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: 2; 
Number Exposed: 27; 
Comments: The potentially exposed horses on this premises tested negative on their sixty (60) day retest. Quarantine on this premises has been released.; 
Previous Alerts: 4287

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: On May 28, 2025, 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 Clearwater County, Alberta. The owner requested an accredited veterinarian test the horse for EIA because it was exhibiting clinical signs compatible with the disease. 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 Suspected: Unknown; 
Number Exposed: 38; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: 5; Gender: Mare; Breed: Quarter Horse (QH); Usage: Barrel Racing; Clinical Signs: None; Confirmation Date: 4/29/2025; Horse Status: Euthanized; 

Comments: Affected horse was tested due to a trace from an off-premises exposure. The positive equine has been humanely euthanized and removed from the property. All exposed equine will remain quarantined until state testing requirements have been met.;

Number Confirmed: 1; 
Facility Type: Private Facility;

Comments: The horse is quarantined on the property and does not pose a risk to other horses in the area. The positive test was discovered during routine “Coggins testing,” which is the laboratory test performed to detect EIA infections in the animals susceptible to the virus. 

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: General notes: Quarantined 4/8/25. 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: 2; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 2; 
Comments: General notes: Quarantined 4/7/25. 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: General notes: Quarantined 3/21/25. 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: 5; 
Number Exposed: Unknown; 
Number Euthanized: 5; 
Comments: General notes: Quarantined 3/31/25. 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: General notes: Quarantined 4/8/25. 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.;