Nationwide West Nile Case Count Continues to Rise

According to the USGS disease maps, 364 cases of equine WNV had been confirmed at last update (Sept. 25).
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As fall begins and temperatures slowly drop, the number of confirmed equine West Nile virus (WNV) cases around the country continues to rise.

According to the U.S. Geological Survey disease maps, 364 cases of equine WNV had been confirmed at last update (Sept. 25). The current case total is the highest since 2007, when 468 horses were confirmed WNV-positive. The current total will likely rise, as mosquito season is not over in many parts of the country.

Iowa, Kentucky, Louisiana, and Virginia have all confirmed WNV cases recently.

Iowa–The Iowa Department of Agriculture and Land Stewardship issued a statement Sept. 28 indicating more than 20 horses in that state had tested positive for WNV thus far in 2012. The statement reported only one case was confirmed in Iowa in 2011

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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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