Disease Alerts

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

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

Horse 1: 
Age: 5; Gender: Mare; Onset of Clinical Signs: 11/23/2025; Clinical Signs: fever, swollen lymph nodes, respiratory noise; Confirmation Date: 11/25/2025; Horse Status: Recovering; Vaccination Status: Vaccinated;

Number Confirmed: 1; 
Number Exposed: 3; 
Facility Type: Private Facility; 

Horse 1: 
Age: 20; Gender: Mare; Breed: Haflinger; Clinical Signs: This mare developed a fever (39.9 C) and a draining tract under her jaw. The discharge was positive for S. equi by PCR.; Confirmation Date: 11/14/2025; 

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.;

Number Confirmed: 1; 

Horse 1: 
Age: 5; Gender: Mare; Breed: Draft-cross; Clinical Signs: Fever, nasal discharge, lethargy; Confirmation Date: 11/19/2025; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

Comments: Horse acquired on November 7, 2025 from a dealer and was ill at the time. Date of onset unclear.;

Number Confirmed: 1; 
Number Exposed: 4; 

Horse 1: 
Age: 11; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 11/6/2025; Clinical Signs: enlarged submandibular lymph nodes, coughing, nasal discharge; Confirmation Date: 11/11/2025; Horse Status: Affected And Alive; Vaccination Status: Status Unknown;

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

Horse 1: 
Age: Weanling; Gender: Colt; Breed: Oldenburg; Usage: Pleasure Riding; Onset of Clinical Signs: 11/5/2025; Confirmation Date: 11/10/2025; Horse Status: Quarantined; Vaccination Status: Status Unknown;

Number Exposed: 6; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: 24; Gender: Mare; Breed: Cross; Onset of Clinical Signs: 10/27/2025; Clinical Signs: swollen submandibular lymph nodes, thick, yellow /white nasal discharge, difficult breathing requiring a tracheostomy; Confirmation Date: 11/1/2025; Horse Status: Euthanized; Vaccination Status: Status Unknown;

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

Horse 1: 
Age: 5; Gender: Mare; Breed: Standardbred; Clinical Signs: Dull and off feed; Confirmation Date: 11/4/2025; Horse Status: Euthanized; Vaccination Status: Status Unknown;

Comments: Horse was ill, underwent exploratory surgery, and was found to have multiple abdominal masses (abscesses).;

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

Horse 1: 
Age: 22; Gender: Gelding; Breed: Draft; Confirmation Date: 10/27/2025; Horse Status: Recovering; Vaccination Status: Status Unknown;

Comments: Another horse at the premises was previously reported as a case (see alert 4657). This is a second, newly reported case at the premises. The sample was collected on October 22, 2025.; 
Previous Alerts: 4657

Number Confirmed: 1; 
Number Suspected: 1; 
Number Exposed: 40; 
Facility Type: Private Facility; 

Horse 1: 
Age: 14; Gender: Gelding; Onset of Clinical Signs: 10/23/2025; Clinical Signs: Nasal discharge and draining lymph node abscess; Confirmation Date: 10/28/2025; Horse Status: Recovering; 

Comments: This is Florida's 30th case of Strangles for 2025;