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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.


    

Equine Infectious Anemia
Athabasca County, AB
Outbreak Identifier: 5002
Alert ID: 2346
November 26, 2021
Confirmed Case(s) - Official Quarantine

Canadian Animal Health Surveillance System

Number Confirmed: 1;
Clinical Signs: None;  Horse Status: Affected And Alive;
Notes: On November 22, 2021, 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 Athabasca County, Alberta. The horse had been tested by an accredited veterinarian at the owner’s request after being made aware that the horse had commingled with infected animals during the previous summer. No clinical signs of disease were noted by the veterinarian when the animal was tested. 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.  See the EIA factsheet.

Equine Influenza
Edmonton, AB
Outbreak Identifier: 5001
Alert ID: 2345
November 25, 2021
Confirmed Case(s) - No Quarantine

Canadian Animal Heath Surveillance System

Number Confirmed: Multiple cases
Facility Type: Racetrack;
Breed: Standardbred; Clinical Signs: Fever, Respiratory Signs, Pneumonia, Coughing; Onset of Clinical Signs: 11/19/2021 Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;
Notes: Equine influenza has been diagnosed in several Standardbred racehorses at a racetrack in Edmonton, Alberta. Horses started developing fevers (103-105°F) on November 19, 2021 followed by nasal discharge and deep barking coughs. A few have develop mild cases of pneumonia. Equine influenza virus was diagnosed on PCR testing of nasal swabs. The most severely affected horses had not been vaccinated recently for influenza. Affected horses are receiving supportive treatment and strict biosecurity measures are in place. For guidance on vaccination of horses for influenza and other equine contagious diseases, contact a veterinarian. For more information go to: Equine Influenza Factsheet

Strangles
Pierce County, WA
Outbreak Identifier: 5000
Alert ID: 2344
November 24, 2021
Confirmed Case(s) - No Quarantine

Washington State Veterinary Office

Number Confirmed: 1;
Number Suspected: 1;
Facility Type: Boarding Facility;
Notes: A horse at a boarding facility in Pierce County has tested positive for Strangles. The facility is working with a private vet and about 10 other horses are on site. For more information on Strangles go to the Strangles factsheet. 

West Nile Virus
Davidson County, TN
Outbreak Identifier: 4999
Alert ID: 2343
November 24, 2021
Information Only

Tennessee Department of Agriculture

Number Confirmed: 1;
Facility Type: Farm;
Age: 22; Gender: Gelding; Breed: Tennessee Walking Horses; Onset of Clinical Signs: 11/16/2021;
Clinical Signs: Ataxia, Recumbency; Confirmation Date: 11/23/2021; Horse Status: Euthanized; Vaccination Status: Unvaccinated;
Notes: For more information about West Nile Virus go to the West Nile Virus factsheet

West Nile Virus
Cuyahoga County, OH
Outbreak Identifier: 4998
Alert ID: 2342
November 24, 2021
Confirmed Case(s) - No Quarantine

Ohio Department of Agriculture

Number Confirmed: 1;
Facility Type: Training Facility;
Notes: A horse at a training facility in Cuyahoga County has tested positive for West Nile Virus. For more information about West Nile Virus go to the West Nile Virus factsheet

West Nile Virus
Hendry County, FL
Outbreak Identifier: 4997
Alert ID: 2341
November 23, 2021
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1;
Facility Type: Private Facility;
Age: 9; Gender: Stallion; Breed: Quarter Horse (QH); Onset of Clinical Signs: 10/9/2021;
Clinical Signs: Depression, Fever, Head shaking, Inability to Stand, incoordination, Muscle Twitching; Confirmation Date: 10/22/2021; Horse Status: Recovering; Vaccination Status: Unvaccinated;
Notes: This is the 4th confirmed case of WNV for Florida in 2021. The 19th confirmed EEE case for Florida was also confirmed on the same premises. For more information about West Nile Virus go to the WNV factsheet. 

Equine Infectious Anemia
Fraser-Fort George Subdivision A., BC
Outbreak Identifier: 4996
Alert ID: 2340
November 19, 2021
Confirmed Case(s) - Official Quarantine

Canadian Food Inspection Agency

Number Confirmed: 1;
Notes: On November 12, 2021, 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 Fraser-Fort George, Subdivision A., British Columbia. The horse had been tested by an accredited veterinarian at the owner’s request because it was exhibiting clinical signs compatible with EIA infection. This horse was acquired in the last 1.5 years from the packhorse/guiding industry which has had EIA cases in the past. 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.

Equine Infectious Anemia
Parkland County, AB
Outbreak Identifier: 4995
Alert ID: 2339
November 19, 2021
Confirmed Case(s) - Official Quarantine

Canadian Food Inspection Agency

Number Confirmed: 1;
Notes: On November 12, 2021, 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 Parkland County, Alberta. The horse had been tested by an accredited veterinarian at the owner’s request because it was exhibiting clinical signs compatible with EIA infection. 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.

Equine Herpesvirus- Respiratory
Ingham County, MI
Outbreak Identifier: 4994
Alert ID: 2338
November 19, 2021
Confirmed Case(s) - Voluntary Quarantine

Attending Veterinarian

Number Confirmed: 1;
Number Suspected: 1-2;
Facility Type: Boarding Facility;
Age: 5; Gender: Gelding; Breed: Warmblood (WB); Onset of Clinical Signs: 11/11/2021;
Clinical Signs: Fever, Mild Nasal Discharge; Confirmation Date: 11/16/2021; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;
Notes: A boarding facility in Ingham County is under a voluntary quarantine after a horse has tested positive for EHV-4. Since the quarantine has been enforced, no other horses on the farm have demonstrated clinical signs. A riding clinic was held the weekend prior to this horse developing clinical signs. Visiting horses were stabled next to the affected horse. One other horse at the facility developed a cough and nasal discharge a few days prior to this horse. For more information about EHV go to:  EHV factsheet

Strangles
Skagit County, WA
Outbreak Identifier: 4993
Alert ID: 2337
November 18, 2021
Confirmed Case(s) - Voluntary Quarantine

Washington State Veterinary Office

Number Confirmed: 1;
Number Suspected: 1;
Notes: A private facility in Skagit County is under voluntary quarantine after a horse has tested positive for Strangles. The owner is practicing biosecurity and voluntary quarantine with private vet oversight. A second horse test pending.  For more information about Strangles go to the Strangles factsheet.