Disease Alerts

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: On September 29, 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 Tay Valley Township, Ontario. The horse had been tested by an accredited veterinarian at the owner’s request to fulfill a pre-event 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: 1; 
Number Exposed: 43; 
Number Euthanized: 1; 

Horse 1: 
Age: 17; Gender: Gelding; Breed: Thoroughbred (TB); Horse Status: Euthanized; 

Comments: A 17–year–old Thoroughbred gelding in Los Angeles County was confirmed positive for Equine Infectious Anemia (EIA). Forty-three (43) potentially exposed horses on the home premises have 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.;

Number Confirmed: 1; 
Number Exposed: 10; 
Number Euthanized: 1; 
Comments: UPDATE: Cohort retest was negative, Quarantine was lifted 09/18/2026; 
Previous Alerts: 5077, 5061

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Comments: On September 17, 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 Perth East County, Ontario. The horse had been tested by an accredited veterinarian at the owner’s request to fulfill a U.S. export 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: 1; 
Number Exposed: 1; 

Horse 1: 
Age: 7; Gender: Gelding; Breed: Quarter Horse (QH); 

Comments: A 7–year–old Quarter Horse gelding in San Benito County was confirmed positive for Equine Infectious Anemia (EIA). One (1) potentially exposed horse on the home premises has initially tested negative for EIA and will remain under quarantine until the sixty (60) day retest as per CDFA and USDA program requirements. CDFA has been on site with continued monitoring of the situation. Epidemiological tracing determined that the positive horse is directly linked to other recent EIA positive premises in California.;

Number Confirmed: 6; 
Number Exposed: 50; 
Number Euthanized: 6; 
Comments: The fifty (50) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; 
Previous Alerts: 5056

Number Confirmed: 3; 
Number Exposed: 2; 
Number Euthanized: 3; 
Facility Type: Private Facility; 
Comments: On Aug 13th, 2026 2 horses on a private facility in Clark County were confirmed by NVSL to be positive for EIA. The facility housed 5 total horses. Follow up regulatory testing found 1 additional horse to be positive for EIA. All 3 positive horses have been euthanized. The facility is under quarantine, and the remaining 2 cohort horses will be retested to confirm negative status prior to quarantine release.;

Number Confirmed: 16; 
Number Exposed: 11; 
Number Euthanized: 16; 
Comments: The eleven (11) remaining potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; 
Previous Alerts: 5042, 4938

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

Horse 1: 


Comments: On Aug. 21, 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 Cowichan Valley, BC, which had been purchased from a premises in Alberta in December 2025. 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 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: Unknown; 

Horse 1: 


Comments: On Aug. 21, 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 Foothills No. 31, 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 disease were noted by the veterinarian 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.;