The Ontario Racing Commission (ORC) has been made aware of an outbreak of the neurological form of Equine Herpes Virus 1 at Hawthorne Race Course, a thoroughbred racetrack in Illinois. Thank you for your emails about the Herpes Outbreak in Florida, yet another reason why Kelly Sigler and my horses are vaccinated for everything there is! The virus has a 10 to 14-day incubation period.”Usually the first sign is a temperature,” said Raquelle Van Vleck, founder of ReHorse Rescue Ranch in Jamestown.The virus can mimic symptoms of a respiratory infection or a number of other ailments, she said.Kennedy Meadows isn’t closing and the infected horses will be quarantined and monitored closely, Bloom said.He did say that while people can ride on the trails, it would be best to not bring horses around theirs for the time being.There have been no new cases in three days, he said.A Sonoma County facility was quarantined earlier this month becauseof equine herpes, though the cases are not directly related, accordingto the UC Davis Large Animal Clinic website.The neurological form of EHV-1, known as equine herpesvirusmyeloencephalopathy, has existed for centuries, but a strain of thevirus has evolved in recent decades with virulence unlike what had beenseen in the past, the UC Davis Equine Health Horse Report said.There have been 22 confirmed cases of equine herpes in California,including one in Jackson in Amador County and one in Waterford inStanislaus County.Additional positive confirmed cases are in Colusa, Glenn, Kern, LosAngeles, Marin, Napa, Placer, Plumas, Shasta, and Ventura counties, theCalifornia Department of Food and Agriculture said.Of the confirmed cases, 16 horses participated in the NationalCutting Horse Association’s Western National Championships in Ogden,Utah, from April 30 to May 8, where all the infected horses hadattended.They were most likely exposed there, officials said.One of the confirmed cases participated only in the Kern County Cutting Horse Event on May 13 in Bakersfield, the CDFA said.There are also two confirmed cases in Colorado.Over the next seven weeks, the virus sickened 90 horses in 10states, 13 of which died or were euthanized, the UC Davis report said.One horse in Kern County was euthanized after showing severeneurologic signs often associated with the disease, the state Food andAgriculture Department said.In mid-May when the outbreak was first noted, veterinarians recommended people keep their horses home for two weeks.Those who are concerned about horses who may have been in contactwith the virus can take their horses temperature twice daily, Sonoraveterinarian Dr. He says if a horse gets infected with EHV-1, there’s nothing you can do except make the horse more comfortable. Then at an opportune time (i.e., levels of high stress) the virus emerges and can be silently shed, infecting other horses that come into contact with the ‘silent shedder. As a result, [this] farm has been placed on a strict 30-day quarantine as recommended by the MD state veterinarian. The new facilities have one horse at each that have tested positive for the virus.
Both facilities were on a hold order and the facilities will now be placed on quarantine for at least 28 days. One of the facilities is in Weber County and the other is in Kane County. Horse owners that are considering attending any equine competitive or congregation events in Utah are encouraged to contact the event sponsor to see if the event is going to take place at the scheduled time and place. Currently, no events have been cancelled under state direction. Even the starting gates have had to be cleaned. Horse owners should watch their horses carefully and call their veterinarian immediately if any abnormal signs are observed. o Horses that attended the Ogden, UT event or have been in contact with horses that attended the event should be isolated and a minimum of two temperatures taken and recorded per day on each horse.
We are not recommending the cancellation of any events involving horses, mules, and/or burros at this time. We treat it with anti-inflammatories,” said Twidale. The veterinary teaching hospitals in Fort Collins, CO (Colorado State University) and Pullman, WA (Washington State University) are not quarantined but under voluntary restriction of equine and camelid patients at this time. Please note: Thank you for reading and for sharing the link to this article with others. Testing of the cerebrospinal fluid on this patient was negative for EHV-1 agent. This disease is not transmissible to humans or other animals other than equine (horses, mules, burros) or camelid (llamas, alpacas, camels) species.