Disease Alerts

Number Confirmed: 1; 
Facility Type: Private Facility;

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

Horse 1: 
Age: Yearling; Gender: Filly; Breed: Thoroughbred (TB); Onset of Clinical Signs: 9/10/2026; Clinical Signs: Proprioceptive deficits, twitching, white-eyed, hypersensitive to noise and activity, temp 102.5; Confirmation Date: 9/15/2026; Horse Status: Recovering; Vaccination Status: Vaccinated;

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

Horse 1: 
Age: 3; Gender: Mare; Breed: Draft-cross; Usage: Ranch Horse; Onset of Clinical Signs: 8/28/2026; Clinical Signs: 8/28/26: seemed off when loading onto the trailer 9/4/26: continued to seem off, incresingly responsive, mild ataxia and a fall; no fever or additional signs; Confirmation Date: 9/11/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Comments: Since the last VSV situation report (9/3/2026), 1 VSV-presumptive positive equine premises has been identified in Montezuma County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular stomatitis New Jersey virus (VSNJV) serotype. 

Updates are as follows: Colorado • Montezuma County – 1 new presumptive positive equine premises • Since the last situation report (9/3/2026), no additional premises have been released from quarantine. New Mexico • No new VSV-affected premises have been quarantined. 

Since the start of the outbreak, 47 VSV-affected premises have been identified (32 confirmed positive, 15 presumptive positive) in 3 states, Arizona, Colorado, and New Mexico. Forty-four (44) premises have had only equine species clinically affected and three (3) premises have had only cattle clinically affected. Of the 47 affected premises, 15 were located in 6 Arizona counties (Cochise, Gila, Maricopa, Pinal, Santa Cruz, and Yavapai Counties), 15 premises were located in 5 Colorado counties (Archuleta, Delta, La Plata, Montezuma, and Montrose Counties), and 16 premises were located in 4 New Mexico counties (Rio Arriba, Sandoval, Santa Fe, and Valencia Counties).;

For more information, go to https://www.aphis.usda.gov/livestock-poultry-disease/cattle/vesicular-stomatitis

Number Confirmed: 1; 
Number Exposed: Unknown; 

Horse 1: 
Age: 2; Gender: Mare; Breed: Standardbred; Onset of Clinical Signs: 8/29/2026; Clinical Signs: Staggering, muscle fasciculations over shoulders, temperature of 100.9, ataxic in both hind limbs, decreased appetite; Confirmation Date: 9/10/2026; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;

Number Suspected: 1; 
Number Exposed: 3; 
Comments: Within 1 mile of other confirmed cases;

Number Confirmed: 1; 
Number Exposed: 29; 
Number Euthanized: 1; 

Horse 1: 
Age: 18; Gender: Gelding; Breed: Missouri Fox Trotter; Usage: Ranch Horse; Onset of Clinical Signs: 9/8/2026; Clinical Signs: 9/8/26: ataxia 9/9/26: down; Confirmation Date: 9/11/2026; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

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

Horse 1: 
Age: 5; Gender: Gelding; Breed: Hackney Pony; Usage: Carriage; Onset of Clinical Signs: 8/26/2026; Clinical Signs: Initially appeared to be colicky; Temperature 101.4; Dog-sitting, yet bright, alert and eating; Confirmation Date: 9/3/2026; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Number Confirmed: 1; 
Number Exposed: 5; 
Facility Type: Private Facility; 

Horse 1: 
Age: 3; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Pleasure Riding; Onset of Clinical Signs: 9/4/2026; Clinical Signs: Ataxia and colic signs manifesting as tripping initially. Recovering after 5 days at the veterinary hospital.; Confirmation Date: 9/10/2026; Horse Status: Recovering; Vaccination Status: Unvaccinated;

Number Confirmed: 1; 
Number Exposed: 8; 
Comments: This is the 24th confirmed case of strangles for Florida in 2026.;