Disease Alerts

Number Confirmed: 5; 
Number Suspected: 1; 
Number Exposed: Unknown; 
Facility Type: Private Facility; 
Comments: Quarantine has been lifted as of 3/28/25. Two of the six affected horses are deceased, but not likely to be related to EHV virus. The remaining affected horses have fully recovered.; 
Previous Alerts: 4317, 4251, 4249

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

Horse 1: 
Age: Newborn; Breed: Standardbred; Clinical Signs: Hemorrhagic diarrhea; 

Comments: Clostridium perfringens type A;

Number Confirmed: 4; 
Number Exposed: 76; 
Facility Type: Boarding Facility; 
Comments: Full farm tested, positive cases quarantined and will be tested again at 21 days. Staff monitoring daily for new symptoms in negative horses. Farm fully complying with state quarantine.; 
Previous Alerts: 4311

Number Confirmed: 1; 
Number Exposed: 2; 
Comments: A confirmed EIA positive equid must be euthanized or quarantined for life 200 yards away from any EIA negative equid as per USDA EIA program rules. Euthanasia was elected for this case and was witnessed by CDFA veterinarians on April 17, 2025. The remaining two (2) potentially exposed horses on the home premises will remain under quarantine until their sixty (60) day retest.; 
Previous Alerts: 4276

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

Horse 1: 
Age: 14; Gender: Mare; Breed: Quarter Horse (QH); Usage: Breeding; Clinical Signs: tested due to iatrogenic exposure; Confirmation Date: 4/10/2025; Horse Status: Quarantined;

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

Horse 1: 
Age: 8; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Roping; Clinical Signs: None; Confirmation Date: 4/15/2025; Horse Status: Euthanized;

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: 73; 
Facility Type: Boarding Facility; 
Comments: Further testing of the 73 exposed is happening this week.;

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

Horse 1: 
Age: 4; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 4/11/2025; Clinical Signs: Fever, abscess, nasal discharge; Confirmation Date: 4/12/2025; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;

Number Confirmed: 2; 
Facility Type: Private Facility; 
Comments: Under vet care.;

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