Breaking News
Southern Border Ports Shut Down Due to Northward Spread of NWS
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.



Equine Infectious Anemia
Madera County, CA
Outbreak Identifier: 6822
Alert ID: 4328
April 25, 2025
Confirmed Case(s) - Official Quarantine

California Department of Food and Agriculture

Number Confirmed: 1; 
Number Exposed: 8; 

Horse 1: 
Age: 12; Gender: Mare; Breed: Quarter Horse (QH); 

Comments: A 12–year–old Quarter Horse mare in Madera County was confirmed positive for Equine Infectious Anemia (EIA). Eight (8) potentially exposed horses on the home premises have initially tested negative for EIA and will remain under quarantine until their sixty (60) day retest as per CDFA and USDA program requirements. This mare was exposed to EIA out of state and was detected as part of an epidemiological trace out. CDFA has been on site with continued monitoring of the situation.;
Search for County