First 2009 Equine West Nile Virus Case Confirmed in Kentucky

Laboratory results received Tuesday (Aug. 4) from Murray State University's Breathitt Veterinary Center confirms the diagnosis of West Nile virus (WNV) having affected a yearling colt in Caldwell County, Kentucky. This is according to the Kentucky State Veterinarian's office.

The yearling Quarter Horse colt is reported by the veterinarian as much improved since
onset of Illness on July 30. On that day he was presented to the attending veterinarian with observable rear limb ataxia.
The colt is reported to have received its' initial West Nile virus inoculation on April 13, but a second inoculation was not administered untl July 13.

The West Nile diagnosis is based on clinical symptoms with the supporting diagnostic result of a positive West Nile virus IgM.

The Office of Kentucky State Veterinarian's Web page at has been updated to reflect this first West Nile case in Kentucky. has articles on  West Nile virus, and you can watch our newest free Webinar "West Nile Virus Reality Check".

About the Author

Kimberly S. Brown

Kimberly S. Brown was the Publisher/Editor of The Horse: Your Guide To Equine Health Care from June 2008 to March 2010, and she served in various positions at Blood-Horse Publications since 1980.

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