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Horse in Dunn County Tests Positive for EEE
Wisconsin Ag Connection - 07/28/2020

Wisconsin has recorded its first case of Eastern Equine Encephalitis this year. State animal health officials say a 10-year-old crossbred mara from Dunn County has tested positive for the disease.

The animal, which was not vaccinated against EEE, was euthanized after showing rapid neurological signs.

EEE is caused by a virus transmitted by mosquitoes, and may cause encephalitis, or inflammation of the brain, and is fatal to horses in 90 percent of cases. Symptoms in horses include depression, appetite loss, drooping eyelids and lower lip, fever, weakness, twitching, paralysis or lack of coordination, aimless wandering, circling and blindness.

The virus is not contagious between horses, but can be carried by mosquitos from an avian, or bird, host to horses and humans.

Last year, Wisconsin had a total of five cases of EEE, but no confirmed cases of West Nile Virus reported.

Meanwhile, the state health department says no EEE cases in humans have been reported in Wisconsin since 2011, which was only the second case known to have occurred since 1984.

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