West Nile Virus (WNV)

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West Nile Incidence and Vaccination, 1999-2007

July 27, 2008

West Nile virus (WNV), an arbovirus endemic in North America, is the causative agent of West Nile equine encephalomyelitis (WNEE) and an important consideration in the differential diagnosis of horses with signs of neurologic disease. West... Read More

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New Mexico Horse Tests Positive for West Nile Virus

July 20, 2008

A horse from McKinley County, N.M., has tested positive for West Nile virus, the first positive test for the virus in a horse this year.

That word from the state health department.

New Mexico has reported no human cases of West... Read More

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Iowa State University Vets: Protect Horses from WNV

July 07, 2008

The time to protect horses from West Nile virus (WNV) is now, said David Wong, DVM, MS, Dipl. ACVIM, assistant professor of equine medicine at Iowa State University's Veterinary Medical Center.

"The peak of West Nile season is Augus... Read More

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First California Equine WNV Case of 2008 Reported

June 24, 2008

The first positive equine case of West Nile virus in California in 2008 has been reported in Riverside County. The affected horse, a 15-year-old Quarter Horse gelding, died.

West Nile virus (WNV) is a mosquito-borne virus that was first... Read More

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South Dakota Horse Owners Reminded to Vaccinate Against WNV

May 22, 2008

Although the number of cases of WNV in South Dakota's horses has gone down significantly in recent years, this decline can be largely attributed to the success of the vaccine, according to South Dakota State... Read More

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Vaccination Schedule Guidelines

April 21, 2008

Developing a vaccination schedule is not as straightforward as it sounds. So much of what you should vaccinate for depends upon such factors as where you live, how often your horse travels, how old he is, his vaccination history, and what infectious ... Read More

Article

West Nile Virus 'Hot Spots' Identified in Texas

April 10, 2008

In a recently published study Texas A&M University veterinarians identified two "hot spots" of West Nile virus (WNV) based on data they collected between 2002 and 2004. One of these spots is in northwestern Texas and the other in an eastern... Read More

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West Nile Virus: Threat and Response

April 04, 2008

In 1999 one in three equines that contracted West Nile virus in North America died due to naïve immune systems... Read More

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Florida Official Urges EEE Vaccination; 9 Deaths Reported

March 21, 2008

Florida horse owners are being urged to take advantage of the vaccines available to protect their animals against Eastern equine encephalitis (EEE) and West Nile virus, said Florida Agriculture and Consumer Services Commissioner Charles H. Bronson.... Read More

Article

Dealing with Emerging Infectious Diseases

March 05, 2008

Scientists are becoming increasingly concerned about the marked and persistent development of emerging infectious diseases--infections that are new to a population or geographic area, have appeared more frequently, or have become more virulent (abl... Read More

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Antibodies to WNV Common in Arab Emirate Horses

January 18, 2008

Researchers found antibodies to West Nile virus (WNV) in nearly 20% of horses recently tested in the United Arab Emirates (UAE), according to Ulrich Wernery, DVM, PhD, scientific director of the Centra... Read More

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Study: Light-Colored Horses at Higher Risk of Dying from West Nile Virus

January 03, 2008

Researchers at the Western College of Veterinary Medicine in Saskatchewan, Canada, recently published a study indicating that light-colored horses diagnosed with West Nile virus (WNV) might be more likely to succumb to the disease than their... Read More

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New Variables Identified as West Nile Risk Factors

December 22, 2007

Based on a recent retrospective study performed at the Western College of Veterinary Medicine in Saskatchewan, Canada, three major risk factors that are completely outside of a horse owner's control contribute to the mortality rate of West Nile... Read More

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Two New West Nile Virus Cases in Kentucky

October 30, 2007

The Kentucky state veterinarian's office reported today (Oct. 30) that the fourth and fifth cases of West Nile virus have been identified in the state. Four of the five cases this year have survived and one was euthanatized. None of the affected... Read More

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Mississippi State Reports Surge in EEE, WNV Cases

October 15, 2007

Eastern equine encephalitis (EEE) and West Nile virus (WNV) have hit Mississippi's horses hard this year, with EEE case numbers surging to more than double 2006 levels. According to State Veterinarian Jim Watson, DVM, there have been 27 cases of... Read More

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Understanding West Nile Virus

October 02, 2007

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Wisconsin Horse Positive for West Nile Virus

September 29, 2007

A Racine County, Wisconson, horse has tested positive for West Nile virus. The Caledonia and Mount Pleasant Health Department says it's the first documented case this year of the mosquito-borne disease in Racine County. Health officer Margaret... Read More

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WNV: Montana, California Leading Country in Equine Cases

September 19, 2007

As of September 11, Montana and California had reported the highest number of equine West Nile virus (WNV) cases so far this year with 24 and 19, respectively. The USDA's Animal and Plant Health Inspection Service tracks equine arboviruses... Read More

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Equine West Nile Virus Case Reported in Kentucky

September 15, 2007

A 10-year-old Quarter Horse gelding is Kentucky’s first West Nile virus (WNV) case of 2007, according to Rusty Ford, Equine Programs manager with the Kentucky State Veterinarian's office.

The horse is from Mason County. He was not vaccinated,... Read More

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UC Davis: Gene Mutation Turned WNV into Killer Disease among Crows

August 21, 2007

A gene mutation that appears to be responsible for changing relatively mild forms of the West Nile virus into a highly virulent and deadly disease in American crows has been identified by a team of scientists led by a researcher at the Universit... Read More

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WNV, EEE Found in Massachusetts Mosquitoes

August 10, 2007

The Massachusetts Department of Public Health (MPH) announced Aug. 10 that Eastern equine encephalitis (EEE) virus and West Nile virus (WNV) have been detected in mosquitoes in Bristol, Norfolk, and Suffolk counties.

According to the MP... Read More

Article

West Nile Virus Claims South Dakota Horse

August 05, 2007

West Nile virus has killed a horse in Meade County, S. D.

This is South Dakota's first horse fatality from the disease since 2005,... Read More

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California Declares WNV Emergency in Three Counties

August 03, 2007

Gov. Arnold Schwarzenegger declared a state of emergency Thursday in three California counties hit hard by the mosquito-borne West Nile virus, which has killed four people this year... Read More

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Oklahoma Horse Owners Urged to Vaccinate Animals Against WNV

July 28, 2007

Oklahoma state veterinarians are encouraging horse owners to have their animals vaccinated against the potentially deadly West Nile virus.

The virus is carried by mosquitoes and officials say because of the rainy summer mosquitoes are... Read More

Article

Two Montana Horses Contract WNV

July 28, 2007

Montana's acting state veterinarian says West Nile virus has been confirmed in horses in Blaine and Phillips counties.

Jeanne Rankin says neither of the two horses was vaccinated against the disease; and both are still alive.

The... Read More