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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.



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Los Angeles County, CA
Alert ID: 373
November 25, 2016
On November 25, 2016 An owner who violated quarantine with a confirmed febrile EHM horse, trailered the horse to an offsite premises. A quarantine was issued for this confirmed positive EHM horse and this quarantine violation will be pursued to the full extent of our quarantine authority laws. A febrile horse from one of the quarantined barns in the LAEC was moved to isolation Wednesday evening. Nasal swab and blood diagnostic samples were taken and sent to CAHFS laboratory—results are expected on Saturday. Quarantined isolation is now home to nine (9) horses and eight (8) of the nine (9) are confirmed 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 quarantine release date will be re-evaluated based on pending test results of the most recent febrile horse at LAEC.