Equine Disease Updates for Kentucky, Wisconsin, New York and Oklahoma

Wisconsin reports two new equine EEE cases. Equine West Nile virus was reported in Kentucky, New York and Oklahoma.
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Three states reported new cases of West Nile virus (WNV) in horses, and Wisconsin reported two new cases of Eastern equine encephalitis (EEE). 

Wisconsin Reports Two New Equine EEE Cases

The Wisconsin Department of Agriculture, Trade and Consumer Protection confirmed Eastern equine encephalitis (EEE) in two additional horses in the states.

The first case was in a A 15-year-old Arabian cross mare from Monroe County with an unknown vaccination status. The mare began showing neurologic ataxia and paresis on September 11. Despite treatment, the mare went down and died on September 23. Testing of brain tissues (PCR) was performed at the Wisconsin Veterinary Diagnostic Laboratory (WVDL). 

The second case was in an unvaccinated 12-year-old Quarter Horse gelding from Juneau County. He began staggering and went down on September 23. The attending veterinarian sampled and treated the horse that day; he reported the horse was febrile and more or less comatose when he saw him. The owner called back to report the horse had not improved and the veterinarian recommended euthanasia. It is not know if the horse was euthanized. Testing (IgM capture ELISA) was performed at the National Veterinary Services Laboratory (NVSL). 

These are cases 18 and 19 for Wisconsin in 2017.

Kentucky Reports 13th Equine WNV Case

The Kentucky Department of Agriculture confirmed a new case of equine West Nile virus (WNV) on September 29 in Adair County. On September 19, a 1.5-year-old male Tennesee Walking Horse cross, which had no WNV vaccination history, was initially down with proprioceptive deficits. The horse responded to treatment and currently is asymptomatic. 

This is the 13th equine West Nile virus case diagnosed in Kentucky this year.

New York Reports Six New Equine WNV Cases

The New York Department of Agriculture & Markets has confirmed six new horses with West Nile virus. Their ages ranged from 1 to 30 years old and were found in the following locations: Cadyville (Clinton County); Grand Island and Lawtons (Erie County); Batavia (Genesee County); Amsterdam (Montgomery County) and Sanborn (Niagara County). None of the horses was vaccinated. Three are alive and three were euthanized.

Oklahoma Reported a New Equine WNV Case

The Oklahoma Department of Agriculture, Food and Foresty confirmed the second West Nile virus-positive horse for 2017 in the state. The 2-year-old Quarter Horse gelding located in Garvin County was showing moderate neurologic signs. His vaccination history was unknown. A quarantine was not issued. For more information visit http://www.ag.ok.gov.

The Equine Disease Communication Center (EDCC) works to protect horses and the horse industry from the threat of infectious diseases in North America. The communication system is designed to seek and report real time information about disease outbreaks similar to how the Centers for Disease Control and Prevention (CDC) alerts the human population about diseases in people.