Equine Infectious Anemia

Confirmed Case(s) – Outbreak Update Source: California Department of Food and Agriculture Number Euthanized: 1; Horse 1: Age: 5; Gender: Gelding; Breed: Quarter Horse (QH); Confirmation Date: 4/20/2026; Horse Status: Euthanized;  Comments: A 5–year–old Quarter Horse gelding in Santa Clara County was confirmed positive for Equine Infectious Anemia (EIA). The gelding has been quarantined on premises with no additional exposed horses on the property. … Read More

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1;  Horse 1: Age: 5; Gender: Gelding; Breed: Quarter Horse (QH); Confirmation Date: 4/20/2026; Horse Status: Affected And Alive;  Comments: A 5–year–old Quarter Horse gelding in Santa Clara County was confirmed positive for Equine Infectious Anemia (EIA). The gelding has been quarantined on premises with no additional exposed horses … Read More

Quarantine Released Source: California Department of Food and Agriculture Number Confirmed: 1; Number Exposed: 35; Comments: The thirty-five (35) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; Previous Alerts: 4890   For more information about EIA go to: https://www.equinediseasecc.org/equine-infectious-anemia Equine Disease Communication CenterUpdates on current disease … Read More

Number Confirmed: 1; Number Exposed: 3;  Horse 1: Age: 4; Gender: Gelding; Breed: Quarter Horse (QH); Horse Status: Euthanized;  Comments: A 4–year–old Appendix Quarter Horse gelding in Fresno County was confirmed positive for Equine Infectious Anemia (EIA). The horse was euthanized on March 27, 2026, due to worsening clinical signs. Three (3) potentially exposed horses on the home premises have initially tested … Read More

Confirmed Case(s) – Official Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1;  Horse 1: Age: 3; Gender: Gelding; Breed: Quarter Horse (QH); Confirmation Date: 4/9/2026;  Comments: A 3–year–old Quarter Horse gelding in San Joaquin County was confirmed positive for Equine Infectious Anemia (EIA). Epidemiological tracing determined that this horse had recently trained on the same premises as … Read More

Confirmed Case(s) – Quarantine Released Source: California Department of Food and Agriculture   Merced County, CA Number Confirmed: 1; Number Exposed: 1; Comments: The one (1) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.; Previous Alerts: 4842   Stanislaus County, CA Number Confirmed: 2; Number Exposed: 25; Horse … Read More

Confirmed Case(s) – Quarantine Released Source: California Department of Food and Agriculture Number Confirmed: 1; Number Exposed: 1; Number Euthanized: 1;  Horse 1: Age: 13; Gender: Gelding; Breed: Quarter Horse (QH); Horse Status: Euthanized;  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 … Read More