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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.

Eastern Equine Encephalitis
Roscommon County, MI
Outbreak Identifier: 7639
Alert ID: 5214
September 08, 2026
Confirmed Case(s) - No Quarantine

Michigan Department of Agriculture

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

Horse 1: 
Age: 1; Gender: Filly; Breed: Quarter Horse (QH); Onset of Clinical Signs: 8/22/2026; Clinical Signs: recumbent, obtunded; Confirmation Date: 9/2/2026; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Comments: 1.5 years old;
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Eastern Equine Encephalitis
Washington County, FL
Outbreak Identifier: 7622
Alert ID: 5197
September 02, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Comments: This is the 7th confirmed case of EEE for Florida in 2026.;
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Eastern Equine Encephalitis
Clare County, MI
Outbreak Identifier: 7616
Alert ID: 5191
September 01, 2026
Confirmed Case(s) - No Quarantine

Michigan Department of Agriculture

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: 3; 
Number Euthanized: 1; 

Horse 1: 
Age: 1; Gender: Stallion; Breed: Quarter Horse (QH); Onset of Clinical Signs: 8/13/2026; Clinical Signs: Unsteady, falls, trembling; Horse Status: Euthanized; Vaccination Status: Undervaccinated;
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Eastern Equine Encephalitis
Portage County, WI
Outbreak Identifier: 7613
Alert ID: 5188
September 01, 2026
Confirmed Case(s) - No Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Farm; 

Horse 1: 
Age: 4; Gender: Mare; Breed: Standardbred; Onset of Clinical Signs: 8/18/2026; Clinical Signs: fever, ataxia, lateral recumbency, seizure-like activity; Confirmation Date: 8/27/2026; Horse Status: Euthanized; Vaccination Status: Unvaccinated;
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Eastern Equine Encephalitis
Indian River County, FL
Outbreak Identifier: 7608
Alert ID: 5184
August 31, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services and attending veterianarian

Number Confirmed: 1; 

Horse 1: 

Age: 16; Gender: Gelding; Breed: Quarter Horse; Use: Pleasure Riding; Onset of Clinical Signs: 8/19/2026; Confirmation Date: 8/27/2026; Clinical Signs: ataxia, extreme somnolence, nystagmus, stumbling; Horse Status: Euthanized; Date Euthanized: 8/20/2026; Vaccination Status: Undervaccinated. 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Private Facility; 
Comments: This is the 6th confirmed case of EEE for Florida in 2026; Positive for both EEE and WNV.
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Eastern Equine Encephalitis
Clinch County, GA
Outbreak Identifier: 7570
Alert ID: 5142
August 18, 2026
Confirmed Case(s) - No Quarantine

State Department of Agriculture

Number Confirmed: 1; 
Number Exposed: 1; 
Comments: The Georgia Department of Agriculture has confirmed a EEE case in Clinch County. The 2026 total reported EEE cases in Georgia to date is 1 confirmed.;
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Eastern Equine Encephalitis
Jackson County, FL
Outbreak Identifier: 7552
Alert ID: 5124
August 11, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Private Facility; 
Comments: This is the 5th confirmed EEE case for Florida in 2026.;
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Eastern Equine Encephalitis
Hillsborough County, FL
Outbreak Identifier: 7548
Alert ID: 5120
August 11, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

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

Horse 1: 
Age: 1; Gender: Filly; Breed: Paso Fino; Onset of Clinical Signs: 7/21/2026; Clinical Signs: incoordination; Confirmation Date: 8/10/2026; Horse Status: Affected And Alive; Vaccination Status: Undervaccinated;

Comments: Tthis is the 4th confirmed case of EEE for Florida in 2026.;
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Eastern Equine Encephalitis
Osceola County, FL
Outbreak Identifier: 7502
Alert ID: 5071
July 10, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Private Facility; 
Comments: This is the third confirmed case of EEE for Florida in 2026.;
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Eastern Equine Encephalitis
Seminole County, FL
Outbreak Identifier: 7490
Alert ID: 5058
June 30, 2026
Confirmed Case(s) - No Quarantine

Florida Department of Agriculture and Consumer Services

Number Confirmed: 1; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Private Facility; 
Comments: This is the second confirmed EEE case for Florida in 2026.;
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