Recent News for Diseases and Conditions

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West Nile Virus Found in Overwintering Mosquito in Pennsylvania

February 26, 2003

Pennsylvania Department of Environmental Protection and Lehigh County West Nile virus (WNV) personnel detected WNV in a Catasaqua Borough mosquito pool.

The West Nile virus workers were collecting samples to determine the status of the... Read More

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Gastroduodenoscopy: What to Expect

February 25, 2003

Veterinarians have a variety of ways to look inside your horse to see what might be bothering him. One of these methods is gastroduodenoscopy, which allows the veterinarian to see the interior of the esophagus, stomach, and duodenum with the use... Read More

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West Nile Virus Vaccine Receives Full Licensure

February 24, 2003

The USDA has issued a full license to Fort Dodge Animal Health for its West Nile virus (WNV) vaccine that has been distributed under a conditional license since August of 2001. Results of efficacy studies completed and submitted to the USDA... Read More

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Localized Equine Herpesvirus Detected at Penn National Racecourse

February 24, 2003

A small outbreak of equine herpes at Penn National Racecourse has prompted management of Philadelphia Park to bar horses shipping in to race as well as horses shipping out to "race and return" from the Grantville, Pa. oval.

Richard... Read More

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AAEP 2002: Infectious Diseases Subdued, Not Eradicated

February 21, 2003

In discussing anthrax, screwworms, and piroplasmosis, Irby said that the three disease are related in that each "can affect equids, has the potential to devastate domestic livestock, is present in many foreign countries, and may... Read More

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AAEP 2002: Vitex Agnus Castus Extract for Treatment of Equine Cushing's Syndrome

February 21, 2003

Vitex agnus castus extract (Chaste Berry) has been reputed to have therapeutic efficacy in the treatment of Equine Cushing’s syndrome. However, results of a study at the University of Pennsylvania’s New Bolton Center repudiated these... Read More

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AAEP 2002: Prevention and Control of Pneumonia Caused by Rhodococcus equi

February 21, 2003

Pneumonia caused by the bacteria Rhodococcus equi is an often-fatal disease that can be difficult to eradicate from affected farms. “The impact of this disease can be large because prevalence and case-fatality rates are often high;... Read More

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Equine Heart Murmurs (AAEP 2002)

February 19, 2003

Despite the high incidence of murmurs in racehorses, they are very hard to diagnose. Heart murmurs are usually low-frequency sounds at the lower limit of human hearing which are difficult for the human voice to reproduce accurately.... Read More

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Horses At Risk For Ulcers

February 18, 2003

Horses moving faster than a walk could be at greater risk of developing gastric ulcers. Alfred Merritt, DVM, MS, and Mireia Lorenzo-Figueras, DVM, recently discovered that changes in gastric tension during intense exercise can push acidic stomac... Read More

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AAEP 2002: OIE Flu Surveillance

February 14, 2003

“Diseases like flu and herpesvirus are always going to be problems for horse owners, and they are not going away,” said Tom Chambers, PhD, of the University of Kentucky’s Gluck Equine Research Center. “The secret to effective vaccines for flu is... Read More

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"Fact Book" Details Effects of MRLS in Kentucky, Other Industry Numbers

February 14, 2003

The number of mares bred in Kentucky in 2002--the year after mare reproductive loss syndrome first hit--fell by 3.4% from 2001, but the state's broodmare population remains 33% higher than it was a decade earlier, according to figures released b... Read More

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OSU Equine Hospital Temporarily Closes for Cleaning and Disinfection; Three Horses Showed Neurologic Signs

February 14, 2003

The Equine Hospital at the Ohio State University College of Veterinary Medicine has closed its doors to non-emergency horse admissions until Feb. 20, 2003. This action has been taken to allow disinfection of the hospital because of potential... Read More

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AAEP 2002: Botulism in Foals: A Survivable Disease

February 13, 2003

Historically, botulism has usually been seen as a fatal problem for the young foal. However, Pamela Wilkins, DVM, PhD, of the Graham French Neonatal Intensive Care Unit at the University of Pennsylvania’s New Bolton Center, said that she ha... Read More

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Failure of Serologic Tests to Detect Rhodococcus equi Foal Pneumonia

February 13, 2003

In the past, some veterinarians have relied on commercially available serologic tests to establish, confirm, or rule out a diagnosis of foal pneumonia caused by the soil-borne bacteria Rhodococcus equi.... Read More

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Diagnosis and Treatment of Rhabdomyolysis in Foals

February 13, 2003

We hear a lot about a horse experiencing rhabdomyolysis (tying-up) during or after exercise. However, foals are also susceptible to muscle damage. Stephanie Valberg, DVM, PhD, of the University of Minnesota, presented "A Review of the Diagnosis... Read More

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Ohio EHV-1 Outbreak; One More Neurologic Horse

February 12, 2003

One more horse has shown neurologic signs of equine herpesvirus type 1 (EHV-1) in the outbreak which began Jan. 12 at the University of Findlay's English riding facility in Findlay, Ohio. Twelve horses have died during the outbreak, and at least... Read More

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AAEP 2002: Foreign Animal Diseases With Equine Potential

February 11, 2003

"When you hear hoofbeats on the covered bridge, please think about the zebra!" said Corrie Brown, DVM, PhD, Dipl. American College of Veterinary Pathology, vice chair of the Cornell Committee for Animal Diseases. Her point was that when... Read More

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Anthrax Kills 42 Horses in Nicaragua

February 11, 2003

According to a Feb. 10 proMED report, a virulent anthrax outbreak has caused the deaths of 42 horses from rural communities in the municipalities of Pueblo Nuevo and Condega in Nicaragua. The report was made from a translation of a story in the... Read More

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Results of Farm Survey To Determine Autumn Fetal Loss Risk Factors

February 11, 2003

Results of a survey of central Kentucky horse farms has provided information on possible risk factors associated with increased fetal losses during early and late autumn 2002. The survey was conducted by the University of Kentucky Department of... Read More

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AAEP 2002: Inflammatory Airway Disease

February 10, 2003

“What is interesting to understand about the horse is that at rest, it breathes about 86,000 liters of air a day, about 25,000 gallons, which may carry quite a bit of dust particles that can really injure the respiratory tract,” said Laurent... Read More

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2002 Fall Fetal Loss Syndrome

February 07, 2003

The results of a survey conducted by the University of Kentucky's Gluck Equine Research Center and College of Agriculture showed that a small number of Thoroughbred and other farms experienced an unusual increase in what is being termed fal... Read More

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WNV and Kentucky Abortions?

February 05, 2003

A question has been raised whether the increased number of West Nile virus (WNV) cases in Kentucky in late summer and fall 2002 contributed to a rise in fall abortions. A retrospective study by the University of Kentucky’s Livestock Disease and... Read More

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Equine Herpesvirus Type 1 in Canada

February 05, 2003

On the heels of the deadly equine herpesvirus type 1 (EHV-1) outbreak in Ohio came a report of a private farm in Canada with several horses dead of the same cause. Scott Weese, DVM, DVSc, Dipl. ACVIM, assistant professor of clinical studies at... Read More

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Ohio Equine Herpesvirus Type 1 Victims Recovering

February 05, 2003

The "miserable, tragic experience" of losing a dozen horses and fighting to save more than 100 others which became ill has devastated the University of Findlay. It will take weeks or months for the remaining 30 horses with neurologic signs... Read More

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Progression of the Ohio EHV-1 Outbreak

February 05, 2003

In the EHV-1 neurologic outbreak at University of Findlay, vets say none of the cases went by the book.... Read More