WNV in Iowa Horses: Additional Cases Confirmed

Two unvaccinated Quarter Horse mares from Polk County developed ataxia (incoordination) on Sept. 24. Both are being treated symptomatically.
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WNV in Iowa
West Nile virus is transmitted to horses via bites from infected mosquitoes. | Photo: G. Bohne/Wikimedia Commons

The Equine Disease Communication Center (EDCC) reported Oct. 2 that the Iowa state veterinarian has confirmed two new equine West Nile virus (WNV) cases. There have been 12 confirmed cases of WNV in Iowa horses so far this year, according to EDCC data.

“A 2-year old Quarter Horse mare and a 4-year old Quarter Horse mare in Polk County first developed ataxia (incoordination) on Sept. 24,” the EDCC said. “The horses are being treated symptomatically. Neither horse was vaccinated.”

Last year there were two confirmed cases of WNV in Iowa horses, according to USDA Animal and Plant Health Inspection Service data

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Written by:

Erica Larson, former news editor for The Horse, holds a degree in journalism with an external specialty in equine science from Michigan State University in East Lansing. A Massachusetts native, she grew up in the saddle and has dabbled in a variety of disciplines including foxhunting, saddle seat, and mounted games. Currently, Erica competes in eventing with her OTTB, Dorado.

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