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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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The color range is based off of the selected End Date. If the End Date doesn't have a value it will use Today's Date.

Strangles
Sheboygan County, WI
Outbreak Identifier: 7460
Alert ID: 5027
June 04, 2026
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

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

Horse 1: 
Age: 26; Gender: Gelding; Breed: Paint; Clinical Signs: Swelling present along submandibular region and along the mandible.; Confirmation Date: 6/1/2026; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;
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Equine Herpesvirus- Neurologic
Palm Beach County, FL
Outbreak Identifier: 7459
Type: EHV-1
Alert ID: 5026
June 03, 2026
Confirmed Case(s) - Official Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Exposed: 18; 
Number Euthanized: 1; 
Facility Type: Boarding Facility; 
Comments: All trace premises have been contacted.;
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Strangles
Broward County, FL
Outbreak Identifier: 7458
Alert ID: 5025
June 03, 2026
Confirmed Case(s) - Official Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Exposed: 35; 
Facility Type: Stable; 
Comments: This is the 10th confirmed premises for Florida in 2026. One additional premises has also been quarantined that was epidemiologically linked to the index premises.;
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Equine Infectious Anemia
Weld County, CO
Outbreak Identifier: 7315
Alert ID: 5024
June 02, 2026
Confirmed Case(s) - Official Quarantine

State Veterinarian's Office

Number Confirmed: 1; 
Number Exposed: 27; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: 10; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Racing; Clinical Signs: Tested due to exposure to previous positive horse; Confirmation Date: 5/26/2026; 

Comments: Horse had been exposed to previous EIA positive horse a year and a half ago; flagged suspect EIA positive on ELISA at CDA AHL on 5/20/2026; 
Previous Alerts: 4977, 4861
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Equine Influenza
Dane County, WI
Outbreak Identifier: 7457
Alert ID: 5023
June 02, 2026
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Exposed: Unknown; 

Horse 1: 
Age: 3; Gender: Mare; Breed: Quarter Horse (QH); Confirmation Date: 5/30/2026; Vaccination Status: Status Unknown;
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Equine Influenza, Strangles
Dane County, WI
Outbreak Identifier: 7456
Alert ID: 5022
June 02, 2026
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

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

Horse 1: 
Age: 5; Gender: Gelding; Breed: Miniature Horse; Confirmation Date: 6/1/2026; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Comments: This horse is positive for both equine influenza and strangles;
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Equine Influenza
Polk County, WI
Outbreak Identifier: 7455
Alert ID: 5021
June 02, 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: 12; Gender: Mare; Breed: Quarter Horse (QH); Confirmation Date: 5/29/2026; Vaccination Status: Vaccinated;
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Equine Herpesvirus- Neurologic
Burlington County, NJ
Outbreak Identifier: 7454
Type: EHV-1
Alert ID: 5020
June 02, 2026
Confirmed Case(s) - Official Quarantine

New Jersey Department of Agriculture

Number Confirmed: 1; 
Number Exposed: 18; 

Horse 1: 
Age: 18; Gender: Gelding; Breed: Oldenburg; Onset of Clinical Signs: 5/19/2026; Clinical Signs: acute clinical signs; Horse Status: Affected And Alive; 

Comments: The 18 remaining horses and ponies on the premises are under quarantine and being monitored for sickness. No recent horse movement has occurred by this herd, making the risk of disease spread from this case very low.;
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Equine Infectious Anemia
Fresno County, CA
Outbreak Identifier: 7394
Alert ID: 5019
June 01, 2026
Quarantine Released

California Department of Food and Agriculture

Number Confirmed: 1; 
Number Exposed: 3; 
Number Euthanized: 1; 
Comments: The three (3) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; 
Previous Alerts: 4946
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Equine Herpesvirus- Respiratory
Yamhill County, OR
Outbreak Identifier: 7453
Type: EHV-1
Alert ID: 5018
May 30, 2026
Confirmed Case(s) - Official Quarantine

State Department of Agriculture

Number Confirmed: 1; 
Number Exposed: 4;
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