West Nile virus (WNV) was first detected in Indiana horses in 2001. In 2002, the state reported 704 cases, the fifth-largest outbreak in the United States. Michael Ward, BVSc, MSc, MPVM, PhD, from Purdue University’s School of Veterinary

West Nile virus has continued its inexorable spread westward across the United States and its presence is now confirmed in all states except Alaska and Hawaii. As of October 27, the USDA reported a total of 1192 equine cases throughout the Unite

Every state in the 48 contiguous United States has now experienced a taste of West Nile virus (WNV) since it first was detected in the Western Hemisphere in 1999. Having their first encounters with West Nile virus this year were Nevada (WNV foun

The Nevada Department of Agriculture’s Animal Disease & Food Safety Laboratory confirmed West Nile virus (WNV) in a Fallon County horse on July 22.

The horse was euthanized June 21 after exhibiting signs consistent with WNV. The horse

Officials at the New Jersey Department of Agriculture announced yesterday (Aug. 17) that West Nile virus (WNV) had been diagnosed in a 7-year-old pregnant mare in Gloucester County, marking the first detection of equine WNV in the state this

Oregon has become the last of the continental United States to be affected by West Nile virus (WNV). Malheur County officials and the Oregon Department of Human Services (DHS) confirmed Aug. 13 that a dead crow found in Vale (in the east central

By late June, West Nile virus (WNV) cases had popped up in areas of the United States, Canada, and Central America. Twenty-six of the United States had WNV detected in at least one species (birds, horses, humans, or mosquitoes). Six states had

A 20-year-old Arabian mare in Nelson County, Ky., has been euthanized following a battle with the mosquito-borne neurologic disease West Nile virus (WNV). Kentucky Department of Agriculture (KDA) officials announced confirmation of WNV in the

By June 29, West Nile virus (WNV) cases had popped up in areas of the United States, Canada, and Central America. Eleven states had recorded equine cases in 2004, and while horse owners are more educated than ever on WNV prevention, officials

The Virginia Department of Agriculture and Consumer Services (VDACS) announced 2004’s first positive case of West Nile virus (WNV) in a horse on May 28. The six-year-old Thoroughbred mare lived on a farm in Culpeper County that had a positive

Three dead birds in Illinois have tested positive for West Nile virus (WNV) since this year’s statewide mosquito-borne disease surveillance began on May 1. One crow was collected in Rantoul County and positive results were confirmed on May 21.

It was nearly five years ago when U.S. scientists were caught unaware by the deadly West Nile virus (WNV) and faced the puzzle of how that virus would adapt to a naïve population of birds and mammals in our various climates. United Kingdom

The tally of states with 2004 U.S. West Nile virus (WNV) equine cases has risen to five with the addition of Arizona and Colorado to the group this week. Alabama, Florida, and Texas had already logged equine cases this year.

Arizona’s

Scientists recently determined that vaccination with Merial Limited’s Recombitek equine West Nile virus (WNV) vaccine would not confuse results if a horse were to be tested for recent WNV exposure or clinical infection.

At the Western

Horse owners in the United Kingdom (U.K.) are being reminded to protect horses they are exporting to the United States from West Nile virus (WNV). However, no WNV vaccine is available in the UK.

According to an article in the online