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.

Los Angeles County, CA
Alert ID: 372
November 23, 2016
There was a new febrile horse with mild neurologic deficits at Los Angeles Equestrian Center (LAEC) yesterday in one of the quarantined barns. Diagnostic samples were sent to CAHFS laboratory for testing and results are positive for non-neuropathogenic EHV-1. The owner of the febrile horse violated quarantine and trailered this horse to an offsite home premises. A quarantine has been issued for the offsite premises and this quarantine violation will be pursued to the full extent of our quarantine authority laws. There are no other new febrile horses or confirmed clinical EHV-1 horses at the LAEC. Quarantined isolation is now home to eight (8) horses and all eight (8) are PCR test negative on nasal swab and blood testing. Enhanced biosecurity measures are in place in all barns under quarantine and all horses’ temperatures continue to be monitored twice daily. CDFA staff continue to provide oversight in working closely with management, trainers and owners at LAEC. The updates on this EHV-1 incident will continue on a 48 hour basis. The new febrile case has extended the quarantine release date to December 6, 2016, assuming no new EHV-1 cases and adherence to the terms of the quarantine.Go to: https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html