Breaking News
National Equine Health Stakeholder Call-October 2026
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.



1 Week
2 Weeks
1 Month
2 Months
3 Months
3+ Months
No Results

The color range is based off of the selected End Date. If the End Date doesn't have a value it will use Today's Date.

Equine Infectious Anemia
Santa Clara and Merced County, CA
Outbreak Identifier: 5243
Alert ID: 2618
June 14, 2022
Confirmed Case(s) - Official Quarantine

California Department of Food and Agriculture

Number Confirmed: 1;
Age: 4; Gender: Mare; Breed: Quarter Horse (QH); Usage: Racing;
Confirmation Date: 6/9/2022;
Notes: On June 9th, a 4-year-old racing Quarter Horse mare was confirmed positive for Equine Infectious Anemia (EIA). The mare was temporarily residing in Merced County when she was tested and was moved back to her home premises in Santa Clara County before EIA test results were received. The mare was the only horse on both premises and has been quarantined at the Santa Clara County premises. An epidemiological investigation is ongoing but is likely linked to the previous Tulare County premises. For more information about Equine Infectious Anemia go to: EIA factsheet. 
Search for County