EHV-1 Confirmed at Los Angeles Equestrian Center in 5 Horses

Los Angeles Equestrian Center Quarantined

update November 7, 2016

A day after California officials reported two Saddlebreds tested positive for the equine herpes virus (EHV-1) the number of infected horses has risen to five. The sick horses are in isolation at the Los Angeles Equestrian Center in Burbank.

A veterinarian euthanized a 5-year-old Saddlebred last week due to the horse’s severe neurologic state, the California Department of Food and Agriculture reports.

A 10-year-old Saddlebred is displaying moderate neurologic signs. The horse remains under a state-imposed quarantine at the Los Angeles Equestrian Center along with dozens of other horses.

EHV-1 can cause respiratory disease, abortion in mares, neonatal foal death and neurological disease.

Six horses, including the two EHV-1 positive animals, returned from a Las Vegas horse show on Sunday, October 30. California officials say the horse show contacted those at the October 27 event recommending that they monitor their horses’ temperatures.

That’s because EHV-1 is highly contagious. It has an incubation period of 2 to 10 days. Respiratory shedding of the virus generally occurs for 7 to 10 days but may persist longer in infected horses.

Direct, horse-to-horse contact is a common route of transmission, but the indirect transmission is also possible. It occurs when infectious materials are carried between infected and non-infected horses by people or inanimate objects such as buckets, tack, or trailers.

Aerosol transmission happens when infectious droplets are inhaled. The source of infectious droplets is most often respiratory secretions.

Veterinarians recommend utilizing basic bio-security measures to help prevent the spread of the virus.

Humans cannot become infected by the virus.