West Nile Virus (WNV)

Article

Kentucky Logs More WNV Cases

November 15, 2001

Eight horses in Kentucky have been confirmed to have West Nile virus (WNV), and four of those horses have been euthanized. One of the confirmed horses was a Thoroughbred shipped to Fayette County, Kentucky, from Florida which... Read More

Article

West Nile Virus Suspected in Horse at Churchill Downs

November 12, 2001

Officials awaited word Nov. 12 on whether a Churchill Downs-based horse euthanized Oct. 25 had West Nile virus (WNV). A preliminary diagnosis indicated Rocket Express, a 2-year-old colt, had contracted the virus.

The Kentucky State... Read More

Article

Equine Cases of West Nile Virus Infection, Jan. 1-Oct. 31, 2001

November 07, 2001

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... Read More

Article

West Nile Virus--Mosquito Not Required

November 02, 2001

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.... Read More

Article

West Nile Continues Migration

November 02, 2001

"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... Read More

Article

West Nile Virus Update

November 02, 2001

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 Read More

Article

First West Nile Virus Positive Horses Confirmed in Tennessee, Illinois

November 02, 2001

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... Read More

Article

West Nile Virus Case Definition

November 02, 2001

“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... Read More

Article

West Nile Virus Surveillance

November 01, 2001

West Nile virus (WNV) is in the United States to stay, and horse owners should not assume that exposure is limited to the northeastern part of the country.... Read More

Article

West Nile Virus Surveillance Maps Available

November 01, 2001

Web-based maps illustrating results from 2001 West Nile virus (WNV) surveillance will be available through the collaboration of the United States Geological Survey (USGS) and the Centers for Disease Control and Prevention (CDC) on the Center for... Read More

Article

Ohio Readies for West Nile

November 01, 2001

West Nile virus (WNV) isn't disclosing any secrets about which direction it's headed next, but Ohio is considered to be in its path, and state officials have responded accordingly. A West Nile Virus Workgroup was formed in 2000,... Read More

Article

Florida West Nile Surveillance

November 01, 2001

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... Read More

Article

The Impact of West Nile Virus

November 01, 2001

Before the late summer of 1999, most veterinarians in the United States could not have told you much about West Nile virus (WNV). Most regulatory veterinarians, like myself, only knew that WNV didn't exist in the Western Hemisphere, and it wasn'... Read More

Article

West Nile Virus Migrates to the Southeast

November 01, 2001

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... Read More

Article

West Nile Virus Found in Ohio

November 01, 2001

At press time, West Nile virus (WNV) had officially arrived in Ohio, according to state and local health officials. The virus was found in a blue jay in Lake County, in northeastern Ohio. This is the farthest west that WNV has been found in the... Read More

Article

West Nile Virus In 18 States & D.C.

November 01, 2001

Since its first appearance in this country in 1999, West Nile virus (WNV) has found its way into the everyday vocabulary of the horse community as it has made its way through 18 states... Read More

Article

Clinical Signs of West Nile Virus

November 01, 2001

Nathan Slovis, DVM, an internal medicine specialist at the veterinary firm of Hagyard-Davidson-McGee in Lexington, Ky. diagnosed the first equine case of West Nile Virus (WNV) in Kentucky, and described... Read More

Article

West Nile Virus Update for 2001

November 01, 2001

Horses in Alabama, Virginia, and Louisiana have been battling West Nile virus (WNV) for the first time since it hit the Western Hemisphere in 1999. In the meantime, veterinarians, public health officials, and horse owners are anticipating the... Read More

Article

West Nile Virus Confirmed In Virginia

October 20, 2001

Virginia's Commissioner of Health E. Anne Peterson, MD, MPH, announced on Oct. 13 that a dead crow found in Prince Edward County in Southside Virginia has been confirmed to have West Nile virus. The crow is the first bird to test positive for... Read More

Article

West Nile Virus Found in NC Crows, Horses

October 12, 2001

North Carolina's State Public Health Laboratory reported Oct. 9 that West Nile virus (WNV) has been found in two horses in the state. The infected horses were in Hyde County and Camden County (and are not confirmed at... Read More

Article

West Nile Virus in Arkansas

October 12, 2001

The Arkansas Department of Health and the Livestock and Poultry Commission have reported that one dead Blue Jay in Union County has tested positive at the USGS National Wildlife Laboratory in Madison, Wisconsin for West Nile virus... Read More

Article

West Nile Virus Identified in Missouri Birds

October 12, 2001

West Nile virus (WNV) has been identified in five American crows from the St. Louis area. The U.S. Geological Survey National Wildlife Health Center, Madison, Wisconsin, notified the Missouri Department of Health and Senior Services Oct. 5 that... Read More

Article

Equine Cases of West Nile Virus Infection, Jan. 1-Oct. 1, 2001

October 12, 2001

There have been 137 cases of clinical West Nile virus (WNV) infection detected in horses from 11 States.

The horses are from:

  • 1 county in Alabama: Dale (Ozark, 2);
  • 2 counties in Connecticut:... Read More

Article

Mosquito Wars

October 01, 2001

West Nile virus (WNV) is spreading, and horse owners are asking, "What can I do to protect my horses?" The good news is that a vaccine for horses has been developed and conditionally approved by the USDA. Experts say the WNV vaccine should work... Read More

Article

2000 Equine West Nile Virus Study Online

October 01, 2001

The United States Department of Agriculture's Animal and Plant Health Inspection Service recently released the final full report for the year 2000 West Nile virus study in horses on the Internet.... Read More