There have been 347 cases (344 confirmed, three probable) of clinical West Nile virus (WNV) infection in horses from 18 States (see Summary by state and county, below). Of 262 horses for which an outcome has been reported to date, at
On Dec. 18, 2000, a vaccine to prevent EPM was approved by the USDA. As of Jan. 25, a total of 43 states had approved the use of the EPM vaccine under USDA conditional licensure. The vaccine must be used under the supervision of a
Researchers at the United States Geological Survey’s (USGS) National Wildlife Health Center in Madison, Wis., recently discovered that West Nile virus can be passed from bird to bird in a laboratory setting without the bite of a mosquito.
Horse owners worried about equine protozoal myeloencephalitis (EPM) take note: In the next few months, there could be several new products reaching the market designed to treat or prevent this neurological disease caused by a single-celled
The inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary lab system. Then, as if the deadly”P>The inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary lab system. Then, as if the dea”>The inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary lab system. Then, as if the d”The inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary lab system. Then, as if the “The inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary lab system. Then, as if the “he inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is director of Virginia’s veterinary “e inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., on Oct. 13. Akey is directo” inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Prince Edward County, Va., o”inevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird case was confirmed in Pri”nevitable has occurred, said Bruce L. Akey, DVM, when the first positive West Nile virus (WNV) bird c”evitable has occurred, said Bruce L. Akey, DVM, when the first positive West “vitable has occurred, said Bruce L. Akey, DVM, when th”itable has occurred, said Bruce “table has oc
Never before have horse owners been as aware of the threat of equine illness as this spring and summer. The list of potential nasties has read like a virtual Whoâs Who in Equine Diseases. Such terms as encephalitis and West Nile have become”P>Never before have horse owners been as aware of the threat of equine illness as t
According to an Oct. 25 United States Department of Agriculture (USDA) Plant and Animal Health Inspection Service (APHIS) Emergency management warning, a horse in Greene County, Tennessee, has been confirmed as positive for West Nile
Public concern has grown in New England after findings of the West Nile virus in more dead birds and mosquitoes. (For updated WNV coverage, visit
“Probable,” “presumptive,” “suspected,” and “confirmed.” All of these words are used to describe equine cases tested for West Nile virus (WNV). The cases might be “confirmed” on a local, state, or national level. What do these
Encephalitis has plagued the East Coast in 2000, with South Carolina the latest state under attack. South Carolina’s bout with at least nine cases of Eastern equine encephalitis (EEE) had horse owners on the defensive this fall.
We hav”P>Ence
Ten horses in Virginia have died of neurological symptoms thought to be caused by Eastern equine encephalitis (EEE), according to Bruce Akey, DVM, director of the state’s laboratory system and president of the American Associa-tion of Veterinary
Four cases of Eastern equine encephalitis had been confirmed in Louisiana at press time. According to a report from a Louisiana Public Health Epidemiologist, the earliest onset was on March 19, and the other three horses had onsets ranging from
Eastern equine encephalitis (EEE) virus or an unrecognized, but very similar, virus, was isolated from the brain of a horse which died on April 21, 2000, in Ventura County, California. Essentially an East Coast disease, EEE rarely has been
Eight cases of equine infectious anemia (EIA) have been discovered in Montana in 2000, according to officials from the stateâs Department of Livestock (DoL). All of the infected horses are on or traced from the Tehinnah Ranch in Melrose, Mont.
Spring and summer are when frequent rains encourage mosquito population growth, increasing the risk of arboviruses (diseases spread by arthropod vectors) for equine populations. West Nile virus (WNV) looms as a possible threat, and the state of
The year’s first four equine cases of West Nile virus (WNV) in the United States have been confirmed in Florida. Three positive horses were located in Jefferson County, and one was found in bordering Leon County. The United States Department of
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