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WNV in Iowa Horses: First Cases of 2019 Confirmed

July 8, 2019
Posted by Erica Larson

Two horses from Davis and Union counties, Iowa, tested positive for WNV in late June, animal health officials reported.

Topics: Diseases and Conditions, Neurologic Disease, West Nile Virus (WNV)

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West Nile virus is transmitted to horses via bites from infected mosquitoes. | Photo: iStock

Iowa Department of Agriculture and Land Stewardship State Veterinarian Jeff Kaisand, DVM, has confirmed that two cases of West Nile virus (WNV) have been detected in horses living in the southern part of at state. These are the first confirmed cases of WNV in Iowa horses this year.

The Equine Disease Communication Center (EDCC) reported last week that cases were confirmed in Davis and Union Counties.

In Davis County, a 15-year-old Thoroughbred mare began displaying clinical signs, including hind-limb ataxia (incoordination) and muscle fasiculations (involuntary twitching) on June 24, the EDCC said. Diagnostic testing confirmed WNV on June 28

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Erica Larson

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.