In a follow-up to the Equine Herpesvirus-1 Myeloencephalopthy (EHM) outbreak in Los Angeles County, CA, on Monday, one horse at the Los Angeles Equestrian Center (LAEC), displaying a fever yesterday and placed in quarantined isolation, has been confirmed positive for non-neuropathogenic EHV-1 yesterday, according to an EDCC alert.

Beautiful horses
Public domain image/Dusan Bicanski

Additionally, the two febrile horses which tested negative on November 10, 2016, were re-sampled yesterday and testing confirmed negative status. Currently, quarantined isolation is home to twelve (12) horses. To date, there have been seven confirmed cases of Equine Herpesvirus-1 Myeloencephalopthy (EHM), one of which was euthanized due to the severity of the disease. The remaining six neurologic cases are showing improvement and remain in isolation.

Enhanced biosecurity measures are in place in all barns under quarantine and all horses’ temperatures are monitored twice daily.