OKLAHOMA RACETRACK POLICY REGARDING EHV-1 EQUINE HERPESVIRUS

OKLAHOMA CITY – Due to the serious nature of a recent outbreak of the neurologic strain of Equine Herpesvirus (EHV-1) at racetracks in the southwest United States, the following policy has been adopted jointly by Remington Park, Will Rogers Downs, Fair Meadows at Tulsa, the Thoroughbred Racing Association of Oklahoma, and the Oklahoma Quarter Horse Racing Association. The pathogenicity of equine herpesvirus 1 (EHV-1) isolates of Japan were evaluated by using the CBA mouse model. **HEALTH ALERT** ​ We would like to inform our clients that EHV-1 has been confirmed in multiple horses on one farm in Middleboro, MA. Equine herpesvirus 1 (EHV-1) is a member of the Alphaherpesvirinae, and its broad tissue tropism suggests that EHV-1 may use multiple receptors to initiate virus entry. Due to the serious nature of a recent outbreak of the neurologic strain of Equine Herpesvirus (EHV-1) at racetracks in the southwest United States, the following policy has been adopted jointly by Remington Park, Will Rogers Downs, Fair Meadows at Tulsa, the Thoroughbred Racing Association of Oklahoma, and the Oklahoma Quarter Horse Racing Association. Equine herpesvirus type 1 (EHV-1) and EHV-4 are genetically and antigenically very similar, but their pathogenic potentials are strikingly different. Several cases have been reported in western states tracing back to a cutting show in Utah.

The USDA:APHIS:VS has recently posted on its website 2011 EHV-1/EHM incident information, including situation reports (listings of suspect and confirmed cases, locations, etc…), recommendations for exposed horses and more here: http://www.aphis.usda.gov/vs/nahss/equine/ehv/. Horse owners your attention to where you travel and commingle is important to your and my horse’s health. Following intraperitoneal or intranasal inoculation of the Syrian hamster with equine herpesvirus type 1 (EHV-1), strain Kentucky D, virus replicated in the liver and lungs reaching a peak at 4 days post-infection (p.i.). Defective interfering particles (DIP) of equine herpesvirus 1 (EHV-1) inhibit standard virus replication and BSI-201 (Iniparib) mediate persistent infection. Oklahoma Racetrack Policy Regarding Ehv-1 Equine Herpesvirus Oklahoma has issued several policies related to EHV-1. N2 – Equine herpesvirus-1 (EHV-1) continues to cause both sporadic and epidemic abortions despite extensive vaccination. EHV-1 and EHV-4 are endemic, are present in most horse populations worldwide.

Please keep checking back, as we will be posting updates as we receive them. *Fee is $50.00 per specimen for the first 3 specimens and then $42.50 each for additional specimens submitted at the same time from the same owner. The immunogenicity in horses of a recombinant equine herpesvirus type 1 (EHV-1) vaccine expressing West Nile virus (WNV) prM and E proteins was studied. Equine herpesvirus 1 (EHV-1) bacterial artificial chromosome clone (Ab4p BAC) was established based on neuropathogenic strain Ab4p. EHV-1 is highly contagious among horses, but poses no threat to humans. Representatives of the Rhode Island, Massachusetts, and Pennsylvania Departments of Agriculture verified today that there are no known cases of equine herpesvirus-1 (EHV-1) or official quarantines in their state. OKLAHOMA CITY – Due to the serious nature of a recent outbreak of the neurologic strain of Equine Herpesvirus (EHV-1) at racetracks in the southwest United States, the following policy has been adopted jointly by Remington Park, Will Rogers Downs, Fair Meadows at Tulsa, the Thoroughbred Racing Association of Oklahoma, and the Oklahoma Quarter Horse Racing Association.

The mouse models of the respiratory and abortion forms of equine herpesvirus 1 (EHV-1) infection have been used to investigate the vaccine potential of various EHV-1 immunogens, the effect of antiviral agents on EHV-1 infection and the pathogenicity of EHV-1 strain variants and deletion or insertional mutants. Equine herpesvirus is one of the most common respiratory diseases affecting horses. Photograph of horse with front legs crossed that illustrates lack of proprioception (knowing where his front legs are placed). OKLAHOMA CITY, OK- Oklahoma horse owners should take great relief that the EHV-1 outbreak has been contained. This is an excerpt from Equine Disease Quarterly, funded by underwriters at Lloyd’s, London, brokers, and their Kentucky agents. On Dec. Ten aborted foals, diagnosed as infected with Equine Herpes Virus 1 (EHV-1) on histopathological criteria, were examined for the presence of EHV-1 using immunohistology as the investigative instrument.

To view this webcast, become a member of TheHorse.com. Infections with equine herpesviruses (EHVs) are widespread in equine populations worldwide. Typical signs of equine herpesvirus respiratory disease include fever, congestion, cough, loss of appetite, nasal and eye discharges, fatigue, and swollen lymph nodes. Horses worldwide face a serious threat from equine herpesvirus (EHV), a common cause of equine respiratory disease. Formalin-fixed, paraffin wax-embedded fetal membranes from 76 cases of equine abortion were examined immunohistochemically for equine herpesvirus (EHV)-1 antigen. Yesterday’s press release conjured up memories of a year ago when we horse owners were hesitant to take our horses out where they could be exposed to EHV-1. Two horses were diagnosed with Equine Herpesvirus (EHV-1) following a recent horse show in Gordyville, Ill.