The Wisconsin Department of Agriculture, Trade and Consumer Protection confirmed a case of Eastern equine encephalitis (EEE) in a mare in Dunn County. They also reported a suspected weanling on the same property. Both horses were euthanized due to the disease.

The 10-year-old Friesian mare had onset of clinical signs on July 13 that included ataxia, neurologic signs and recumbency. The unvaccinated mare was confirmed with EEE on July 21.

The suspected horse on the premises was a 4- or 5-month-old weanling that was circling, became recumbent and was subsequently euthanized.

The mare was the first confirmed case of EEE in Wisconsin this year.

Information for this report was provided by the Equine Disease Communication Center.