Tag Archives: EHV-1

Colorado Horse Park Three Day Event and June High Prairie Dressage Canceled

Parker, CO — In order to add one more buffer week to ensure that there is no possibility of EHV-1 infection at The Colorado Horse Park (CHP), the organization has canceled the following events scheduled for June 2-5, 2011: Colorado Horse Park Three Day Event and June High Prairie Dressage. This is merely a precautionary measure; no horse exposed to the virus has been on the property. In fact, no horses with EHV-1 symptoms have been identified in Douglas County. FEI veterinarian and CHP consultant, Terry Swanson D.V.M., stated that he believes there is very little likelihood of EHV-1 being discovered at the Park and he felt that the extra buffer week would lay the issue to rest.

“We wanted riders and owners to be absolutely confident that their horses were safe at The Colorado Horse Park,” explained Helen Krieble, founder and president of The Colorado Horse Park. “Our hearts truly go out to the competitors who were planning on showing next week. We are truly sorry for them. However, we want everyone to feel extremely certain about the remainder of the season.” Of course, riders who have already entered the CHP Three Day Event and June High Prairie Dressage Show will receive full refunds.

The remainder of CHP’s show season will run as scheduled, beginning with the first week of the expanded Colorado Summer Circuit on June 8, 2011. “I am confident that with the additional buffer week, the 2011 horse show season will not only be able to continue, but will be extremely successful,” Krieble stated.

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Helping to Cope with the Equine Herpes Virus-1, Naturally

According to the USDA Animal and Plant Health Inspection Service (APHIS), the Equine Herpes Virus (EHV-1) infection in horses can cause not only the neurologic disease (Equine Herpes Virus Myeloencephalopathy, or EHM for short) that is in the news now, but also respiratory disease, abortion in mares and neonatal foal death.  Viruses spread through the air, contaminated equipment, clothing (including boots) and hands.

A virus, according to Wikipedia, is a biological agent that reproduces inside the cells of living hosts.  Once the host cell is infected by a virus, it is forced to produce many thousands of identical copies of the original virus at an astounding rate.  Because viruses do not have cells that divide, the new viruses accumulate in the infected host cell.  Viruses are found wherever there is life and have most likely existed since living cells first evolved.

Viral infections are usually eliminated by the body’s immune system which protects against disease by identifying and killing pathogens and tumor cells.   Detection of viruses is complicated as the pathogens can evolve rapidly, adapting easily to avoid the defenses of the immune system.  When the immune system is not functioning properly, recurring and life-threatening infections can result.  How can horse owners help protect their horses and build up their immune system?

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Equine Herpesvirus-1 (EHV-1) Update: May 25, 2011

The Texas Animal Health Commission (TAHC) has no “confirmed” or “suspect” cases of the neurologic form of EHV-1 to report today. TAHC officials continue releasing primary traced horses and their cohorts (stablemates) that attended the Ogden, Utah, NCHA event.

Currently 16 known horses in Texas that attended the event and 185 cohorts (stablemates) remain under movement restrictions. There are a total of ten premises that have been exposed and those premises are in the following counties: Randall, Parker, Jack, Kerr and Mills counties.

TAHC and Texas veterinarians continue to investigate new situations statewide where horses are displaying symptoms consistent with that of the neurologic form of EHV-1.

If traveling out of state, TAHC officials urge horse owners to check with the state of destination before traveling. A downloadable list of contact information for all 50 state animal health agencies may be found on the U.S. Animal Association website (http://www.usaha.org/Reference/FederalStateAnimalHelalth.aspx) or on the USDA website (http://www.aphis.usda.gov/import_export/animals/animal_import/animal_imports_states.shtml).

The TAHC will post another Texas EHV-1 update tomorrow, Thursday, May 26 at 5:30 p.m. A new national report from USDA will also be available Friday, May 27.

For information regarding EHV-1, visit www.tahc.state.tx.us or Facebook (www.facebook.com/TexasAHC) or Twitter (www.twitter.com/TAHC).

Yvonne “Bonnie” Ramirez
Director of Public Information (Texas Animal Health Commission)
“Serving Texas Animal Agriculture Since 1893”

Equine Herpesvirus-1 (EHV-1) Update

May 20, 2011 – Texas Animal Health Commission (TAHC) officials are continuing to trace exposed horses that attended the National Cutting Horse Association (NCHA) Western National Championships event that ended on May 8 in Ogden, Utah that were potentially exposed to Equine Herpesvirus-1 (EHV-1). There are now 25 known horses in Texas that attended the event and 336 more cohorts (stablemates) of the 25 that are currently being held under movement restrictions across the state. The good news is that no new cases have been reported today. Texas still only has one confirmed case and one suspect case reported. The epidemiological investigation continues however, and Texas horse owners must be vigilant of the possibility that exposed horses may still be incubating the disease.

TAHC continues to suggest that horse owners closely evaluate the risk of participating in upcoming events scheduled for this weekend and/or co-mingling their horses with other horses and equipment (trailers) of unknown history. Because the incubation period is usually about 4-6 days or less, even a one week voluntary stop movement may be enough to nip the cycle of transmission between horses before it grows in scope. The TAHC will re-evaluate this position after analyzing new case data or other epidemiological information that may be disclosed over the weekend.

Horse owners should contact event organizers in advance to ensure that scheduled events have not been cancelled. Some other states have established emergency rules for entry as a result of this situation, so if interstate travel is planned, owners and/or veterinarians writing health certificates should check in advance to ensure they meet all entry requirements. Finally, it is recommended that all newly purchased horses or introduced horses to a premise should be isolated to help.

Another EHV-1 update will be sent out Monday evening. For information regarding EHV-1, visit www.tahc.state.tx.us. Several useful links can also be accessed through our website. You can also keep up with EHV-1 information through our Facebook (www.facebook.com/TexasAHC) and Twitter (www.twitter.com/TAHC) sites.

Yvonne “Bonnie” Ramirez
Director of Public Information – Texas Animal Health Commission (TAHC)
Web: www.tahc.state.tx.us
Facebook: www.facebook.com/TexasAHC
Twitter: www.twitter.com/TAHC
Phone: 512-719-0710

UPDATED: Information Regarding Equine Herpesvirus (EHV-1) and Equine Herpesvirus Myeloencephalopathy (EHM)

As of 12:00 PM EST on May 20, cases of Equine Herpesvirus Myeloencephalopathy (EHM) have been confirmed in eight states and in Canada. Please use the state veterinarian in your state as a resource for information and guidance regarding this disease.

Please see the USDA situation report for updated information: http://image.exct.net/lib/feef1d757d6307/m/1/USDA+EHV-1+Situation+Report.pdf.

Affected States’ State Veterinarian Contact Information:

California: http://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html
Phone: (916) 654-1447

Colorado: http://www.colorado.gov/cs/Satellite/Agriculture-Main/CDAG/1167928197091
Phone: (303-239-4161

Idaho: http://www.agri.state.id.us/Categories/Animals/animalHealth/healthehv.php
Phone: (208) 332-8544

Oregon: http://www.oregon.gov/ODA/__news_449105797.shtml
Phone: (503) 986-4680

New Mexico: http://www.nmbvm.org/
Phone: (505) 841-6161

Texas: http://www.tahc.state.tx.us/

Utah: http://ag.utah.gov/news/EquineHerpesOutbreak.html
Phone: (801) 538-7162

Washington: http://agr.wa.gov/FoodAnimal/AnimalHealth/HotTopics.aspx
Phone: (360) 902-1881, (360) 902-1835

Continue reading UPDATED: Information Regarding Equine Herpesvirus (EHV-1) and Equine Herpesvirus Myeloencephalopathy (EHM)

2011 Equine Herpes Myeloencephalopathy (EHM) Western States Outbreak – Kentucky Perspective May 20, 2011 Update

The following information is from the Kentucky Office of the State Veterinarian, Robert Stout, DVM.  Unfortunately there are a great many rumors and unverified information continues to circulate about the current outbreak of EHV-1.  The information contained in this notice is current and has been verified by the proper veterinary authorities.  The Kentucky Horse Council works closely with the Kentucky Office of the State Veterinarian to ensure that all information related to disease outbreaks is factual and correct.

The USDA APHIS, Veterinary Services has provided their initial situation report describing the Western States Equine Herpes Myeloencephalopathy / Equine Herpes Virus Type 1 outbreak.  The information reported below was provided to USDA by state veterinarians and is believed to be accurate through the close of business on Wednesday, May 18, 2011. It is important to remember the investigations are evolving and data changes rapidly.

There is much rumor and inaccurate information being distributed through social media networks. The Kentucky Office of the State Veterinarian encourages individuals to base their decisions on information received from reliable sources and which has undergone a level of scrutiny. The Kentucky Office of the State Veterinarian appreciates the USDA APHIS assisting our industry by compiling and distributing this valuable information.

Continue reading 2011 Equine Herpes Myeloencephalopathy (EHM) Western States Outbreak – Kentucky Perspective May 20, 2011 Update

Equine Herpes Virus Alert

10 EHV-1 confirmed cases from cutting horses attending the 2011 NCHA Western National Championships

May 13, 2011 (with updates to May 18th) – A recent disease outbreak of Equine Herpes Myeloencephalopathy (EHV-1) has been traced to horses who attended the National Cutting Horse Association’s Western National Championships in Odgen, Utah on April 30 – May 8, 2011. California horses who participated in this event may have been exposed to this EHV-1 virus.

The California Department of Food and Agriculture encourages owners of horses who participated in the Odgen, Utah event to monitor their horses for clinical signs of disease. A rectal temperature in excess of 102F commonly precedes other clinical signs. Therefore, we are urging owners to take temperatures on each individual horse(s) twice a day. If a temperature above 102F is detected contact your private practitioner immediately. Laboratory submission of nasal swabs and blood samples collected from the exposed horse can be utilized for virus detection and isolation.

The EHV-1 organism spreads quickly from horse to horse and the neurologic form of the virus can reach high morbidity and mortality rates. The incubation period of EHV-1 is typically 2-10 days. In horses infected with the neurologic strain of EHV-1, clinical signs may include: nasal discharge, incoordination, hind end weakness, recumbency, lethargy, urine dribbling and diminished tail tone. Prognosis depends on severity of signs and the period of recumbency. There is no specific treatment for EHV-1. Treatment may include intravenous fluids, anti-inflammatory drugs and other appropriate supportive treatment. Currently, there is no equine vaccine that has a label claim for protection against the neurological strain of the virus.

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Colorado Horse Park Responds to EHV-1 Outbreak

The Colorado Horse Park is keeping in close contact with the Colorado State Veterinarian regarding the EHV-1 outbreak in the Western United States. We are also working closely with our official veterinarian Littleton Equine Medical Center to ensure the health and safety of all horses that reside at CHP and that compete at our facility.

We will be following all recommendations from both the Colorado State Veterinarian and LEMC, and are currently developing an increased health and safety protocol for horses entering our facility.

This weekend’s horse show will continue as scheduled. Veterinarians are monitoring all horses entering the property.

The Rocky Mountain Quarter Horse Association show scheduled for May 27-29, 2011 at The Colorado Horse Park has been canceled. No horses in the area have displayed signs of EHV-1, but the decision was made to cancel the show until the extent of the outbreak has been determined.

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