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

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

Already have an account?
and continue reading.