Crossing Boundaries

Vaccination of broodmares is just one part of a complete disease prevention program, but its importance should not be underestimated. Immunization is one of the least expensive, and most effective, strategies horse breeders can use to protect

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West Nile Recovery x 3

One day, Marla Gilvin heard whinnying uncharacteristic from her 5-year-old Kentucky Mountain mare Cocoa Rain. ?I went out to see what she was doing and called her to the barn,? Gilvin recalls. ?She didn?t move. Her 4-month-old foal was running

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Diary of an EHV-1 Survivor

Twenty-year-old Radar “just wasn?t looking right” when he came in from the pasture on April 6, recalls his owner, Bill McCarthy, PhD. “When I picked his feet up to pick them out, he would just fall into me,” said McCarthy. “The next day the stat

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Herpesvirus Breakthrough

Preliminary research on equine herpesvirus type 1 (EHV-1) from Cornell University indicates that the commercial vaccine containing modified live virus (Rhinomune) appears to be more effective in preventing infection than killed

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EHV-1 Outbreak Confirmed at Churchill Downs


The neurologic form of equine herpesvirus type 1 (EHV-1) was confirmed as affecting horses at Churchill Downs in mid-May. Three barns remained under quarantine until horses in those barns met requirements by May 24 to begi

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Update on Maryland EHV-1 Outbreak


As of May 26, there are no new clinical equine herpesvirus (EHV-1) cases among horses at the Columbia Horse Center in Maryland. The facility has been handling an outbreak of the neurologic form of the virus since late

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Hold Order Lifted at Maryland Horse Facility

On Saturday, June 11, at 3:30 p.m. the Maryland Department of Agriculture (MDA) lifted the “Animal Hold Order” at the Columbia, Md. horse facility that has been handling a neurologic equine herpesvirus situation since late March. The lifting of

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Equine Herpesvirus Suspected at Prairie Meadows

Horses in one barn at Prairie Meadows in Iowa have been quarantined due to a possible case of equine herpesvirus.


The order to keep horses from entering or leaving the barn area came late in the afternoon of June 6 after Storm Wrangler

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Seven Churchill Horses Test Positive for EHV

Horses trained by Steve Asmussen will remain under quarantine in Barn 38 for at least a few more days. Seven horses in his barn still test positive for equine herpesvirus, although there are no new cases with clinical signs. The neurologic form

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Equine Herpesviruses 1&4

Herpesvirus is a particularly well-evolved virus that occurs in many mammals, such as humans, horses, cats, and cows. Each strain tends to be species-specific, meaning that viruses infecting one animal species do not usually infect another

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Cornell Research on Herpesvirus Vaccines

A presentation on recent research into herpesvirus type 1 (EHV-1) vaccines was given by Klaus Osterrieder, DVM, DVM Habilitation (a German equivalent to a PhD), associate professor of virology in the College of Veterinary Medicine at Cornell the

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Additional Horse Succumbs to EHV-1 in Maryland

There are no new clinical equine herpesvirus (EHV-1) cases among horses at the Columbia, Md. horse facility that has been handling an outbreak of the neurologic form of the virus since late March. In the past week, one horse that had been

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Umbilical Cord Length and Foal Health

A long umbilical cord increases the risks for abortions and stillbirths in horses. Complications include strangulation of the foal and excessive cord twisting, writes Karin Bosh in a recent edition of Equine Disease Quarterly, a newsletter

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