Breaking News
EDCC Newsletter April 2025
Learn More

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.



Madera County, CA
Outbreak Identifier: 6822
Alert ID: 4328
April 25, 2025
Confirmed Case(s) - Official Quarantine

California Department of Food and Agriculture

Number Confirmed: 1; 
Number Exposed: 8; 

Horse 1: 
Age: 12; Gender: Mare; Breed: Quarter Horse (QH); 

Comments: A 12–year–old Quarter Horse mare in Madera County was confirmed positive for Equine Infectious Anemia (EIA). Eight (8) 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. This mare was exposed to EIA out of state and was detected as part of an epidemiological trace out. CDFA has been on site with continued monitoring of the situation.;

MRC Les Collines-de-l'Outaouais, QC
Outbreak Identifier: 6821
Alert ID: 4327
April 25, 2025
Confirmed Case(s) - Voluntary Quarantine

MAPAQ

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

Horse 1: 
Age: 7; Gender: Mare; Clinical Signs: fever, cough, nasal discharge; 

Comments: Influenza type A qPCR;

Lake County, FL
Outbreak Identifier: 6820
Alert ID: 4326
April 25, 2025
Confirmed Case(s) - No Quarantine

FDACS Veterinary Medical Officer

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

Horse 1: 
Age: Yearling; Breed: Donkey; Onset of Clinical Signs: 4/3/2025; Confirmation Date: 4/17/2025; Horse Status: Deceased;

Rock County, WI
Outbreak Identifier: 6819
Alert ID: 4325
April 25, 2025
Confirmed Case(s) - Voluntary Quarantine

Wisconsin Department of Agriculture, Trade and Consumer Protection

Number Confirmed: 1; 
Number Exposed: 20; 

Horse 1: 
Age: 6; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/18/2025; Confirmation Date: 3/21/2025; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;

Putnam County, FL
Outbreak Identifier: 6818
Alert ID: 4324
April 25, 2025
Confirmed Case(s) - Official Quarantine

FDACS Veterinary Medical Officer

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

Horse 1: 
Age: 17; Gender: Mare; Breed: Pony; Clinical Signs: Fever; Confirmation Date: 4/22/2025; Horse Status: Recovering; 

Comments: This is Florida's 15th confirmed case of Strangles for 2025;

Flagler County, FL
Outbreak Identifier: 6817
Alert ID: 4323
April 24, 2025
Confirmed Case(s) - Official Quarantine

FDACS Veterinary Medical Officer

Number Confirmed: 1; 
Number Suspected: 1; 
Number Exposed: 18; 
Facility Type: Boarding Facility; 

Horse 1: 
Age: 14; Gender: Gelding; Breed: Quarter Horse (QH); Onset of Clinical Signs: 4/11/2025; Clinical Signs: Fever, nasal discharge, cough; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: This is Florida's 14th confirmed case of Strangles for 2025;

Hastings County, ON
Outbreak Identifier: 6816
Alert ID: 4322
April 24, 2025
Confirmed Case(s) - Voluntary Quarantine

OMAFA

Number Confirmed: 1; 
Number Suspected: 4; 
Number Exposed: Unknown; 

Horse 1: 
Gender: Gelding; Breed: Appaloosa; Clinical Signs: This horse was bought from an auction in Northumberland County. The next day it had a cough and nasal discharge. The other horses on the property have been vaccinated for influenza and only had mild signs.; 

Comments: The facility owner has instituted voluntary animal movement restrictions and biosecurity protocols.;

District of Temiskaming, ON
Outbreak Identifier: 6815
Alert ID: 4321
April 24, 2025
Confirmed Case(s) - Voluntary Quarantine

OMAFA

Number Confirmed: 1; 
Number Exposed: 1; 

Horse 1: 
Age: Yearling; Gender: Colt; Breed: Quarter Horse (QH); Clinical Signs: This yearling was purchased from a farm in southern Ontario . He was paired with a gelding upon arrival. About 10 days later the yearling developed signs of strangles (lymph node swelling, nasal discharge, fever) and was positive on testing for S. equi.; 

Comments: The facility owner, working with their veterinarian, has instituted voluntary animal movement restrictions and biosecurity protocols. To see past and present Strangles cases in Ontario go to: https://www.oahn.ca/resources/ontario-equine-disease-alerts/ and enter the disease surveillance portal.;

Garvin County, OK
Outbreak Identifier: 6814
Alert ID: 4320
April 23, 2025
Confirmed Case(s) - Official Quarantine

State Veterinarian

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: 12; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: 2; Gender: Filly; Breed: Quarter Horse (QH); Usage: Barrel Racing; Clinical Signs: None; Confirmation Date: 4/8/2025; Horse Status: Euthanized; 

Comments: A 2-year-old QH in Garvin County, OK was confirmed to be positive for EIA. The affected horse was tested due to a trace from an off-premises exposure. The positive equine has been humanely euthanized and removed from the property. All exposed equine on the affected premises will remain quarantined until state testing requirements have been met.;

Washington County, VA
Outbreak Identifier: 6813
Alert ID: 4319
April 23, 2025
Confirmed Case(s) - Voluntary Quarantine

Attending Veterinarian

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

Horse 1: 
Age: 3; Gender: Colt; Breed: Quarter Horse (QH); Onset of Clinical Signs: 4/15/2025; Clinical Signs: Fever and inappetance.; Confirmation Date: 4/17/2025; Horse Status: Recovering;