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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.



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Equine Influenza
Wellington County, ON
Outbreak Identifier: 7757
Alert ID: 5333
October 16, 2026
Confirmed Case(s) - Voluntary Quarantine

Ontario Ministry of Agriculture, Food, and Agribusiness

Number Confirmed: 1; 
Number Suspected: 25; 
Number Exposed: 25; 
Facility Type: Private Facility; 

Horse 1: 
Age: 6; Gender: Gelding; Onset of Clinical Signs: 10/6/2026; Clinical Signs: During the week of Oct 5, 2026 fevers (39.5-40 C) started appearing in the stabled horses followed by coughing. The virus has quickly spread affecting approximately half of the resident horses with both stabled and outdoor horses affected. Influenza was confirmed by PCR on nasal swabs. EHV-5 is also present.; Confirmation Date: 10/15/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: The facility manager, working with their veterinarian, has implemented voluntary animal movement restrictions and infection control procedures.;
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Equine Influenza
Polk County, WI
Outbreak Identifier: 7702
Alert ID: 5278
September 30, 2026
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Exposed: 4; 
Facility Type: Private Facility; 

Horse 1: 
Age: 10; Gender: Mare; Breed: Quarter Horse Cross; Onset of Clinical Signs: 9/22/2026; Clinical Signs: Fever, cough, bilateral mucopurulent nasal discharge; Confirmation Date: 9/25/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;
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Equine Influenza
Bay County, MI
Outbreak Identifier: 7601
Alert ID: 5176
August 28, 2026
Confirmed Case(s) - Voluntary Quarantine

Michigan Department of Agriculture

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

Horse 1: 
Age: 15; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 8/21/2026; Clinical Signs: Fever, nasal discharge, cough; Confirmation Date: 8/27/2026; Horse Status: Recovering; Vaccination Status: Vaccinated;

Comments: Date of last influenza vaccination unknown.;
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Equine Influenza
Unknown County, MI
Outbreak Identifier: 7584
Alert ID: 5157
August 21, 2026
Confirmed Case(s) - No Quarantine

Michigan Department of Agriculture

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

Horse 1: 
Age: 7; Gender: Gelding; Breed: Quarter Horse (QH); Clinical Signs: Lethargy, nasal discharge, fever; Confirmation Date: 8/20/2026; Vaccination Status: Vaccinated;
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Equine Influenza
Outagamie County, WI
Outbreak Identifier: 7549
Alert ID: 5121
August 11, 2026
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Suspected: 2; 
Number Exposed: Unknown; 

Horse 1: 
Age: 10; Gender: Gelding; Breed: Quarter Horse (QH); Clinical Signs: Fever, nasal discharge, cough; Confirmation Date: 8/3/2026; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;
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Equine Influenza
Crook County, OR
Outbreak Identifier: 7530
Alert ID: 5101
July 31, 2026
Confirmed Case(s) - Official Quarantine

State Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown;
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Equine Influenza, Strangles
Lancaster County, NE
Outbreak Identifier: 7517
Alert ID: 5087
July 27, 2026
Suspected Case - Voluntary Quarantine

Attending Veterinarian

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

Horse 1: 
Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Rodeo; Onset of Clinical Signs: 7/23/2026; Clinical Signs: Fever, ocular and nasal discharge, cough; Confirmation Date: 7/24/2026; Horse Status: Quarantined; Vaccination Status: Unvaccinated;

Comments: Horse tested positive for both Influenza and Strangles.;
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