Preventing Airway Obstruction

During periods of intense exercise, portions of the upper airway can collapse, interfering with breathing. The cause of these obstructive episodes, most notably dorsal displacement of the soft palate (DDSP), is yet unknown. In other species,

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West Nile Virus Encephalitis

In August 1999, West Nile virus (WNV) was identified as the cause of encephalitis in birds, horses, and humans in New York. Since then, WNV activity has spread north and south along the East Coast, and west to several states following bird

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West Nile Virus Detected in South Dakota

West Nile virus (WNV) has been detected in a dead crow in Aberdeen, South Dakota, a state health official said June 26. Testing at the State Public Health Laboratory in Pierre confirmed the virus. This is the first detection of the virus in Sout

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West Nile Virus In 31 States and D.C. in 2002

West Nile virus (WNV) has continued its advance across the United States, appearing for the first time in 2002 where it has visited in previous years, and making its debut in other states untouched by the virus before 2002. In all, 31 states and

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West Nile Virus Confirmed in Oklahoma

The Oklahoma State Department of Health and Tulsa City-County Health Department confirmed July 18 that a crow found in the Tulsa city limits has tested positive for West Nile virus (WNV). This is the first detection of the virus in Oklahoma. No

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Potomac Horse Fever Fatality in Kentucky

A Thoroughbred filly in Central Kentucky recently succumbed to Potomac horse fever (PHF), a disease that is detected only once or twice per year in the Commonwealth. The cause of death was a mystery until test results were received from the

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West Nile Virus in Arkansas and North Dakota

A horse in Grand Forks County, ND, has been confirmed as positive for West Nile virus (WNV). This is the first-ever detection of WNV in North Dakota.


The horse was an approximately 2-year-old Quarterhorse gelding that became ill on June

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Probable First Equine West Nile Virus Case in Texas

Preliminary tests indicate that Texas has its first equine West Nile virus (WNV) case. The sick horse was euthanized June 29 near Katy, Texas. West Nile virus was detected for the first time in Texas on June 18 near Houston; since then, 29

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West Nile Virus Education is Key

“Whether or not West Nile virus (WNV) is going to become a serious concern in your state, the media is going to make it one,” stated Bill Saville, DVM, PhD, Dipl. ACVIM, of The Ohio State University’s (OSU) Department of Veterinary Preventive

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Mosquito Patrol

Mosquitoes are more than a nuisance, they are a public and equine health hazard. In addition to spreading West Nile virus (WNV), mosquitoes can carry malaria, yellow fever, dengue, filariasus (e.g., dog heartworm), and several encephalitis

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Researchers Share West Nile Virus Tips

Veterinarians experienced in the surveillance, treatment, and public education of West Nile virus (WNV) presented their research and observations of the disease at the recent annual meeting of the American College of Veterinary Internal Medicine

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West Nile Virus Testing

A key in West Nile virus (WNV) surveillance is reporting disease incidence–WNV is a reportable disease in all states. Testing of suspect clinical cases is a service provided by the federal and state governments. It costs nothing at the national

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Breathe Easier!

When Anne Thomas called me to her ranch house early one spring morning, she said it was urgent. Her 5-year-old horse, Charlie, was having trouble breathing. When I arrived at the barn, I could see the bay gelding standing in the middle of his

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