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EEE Confirmed in South Carolina Pony

December 15, 2020
Posted by Diane E. Rice

The case marks the state’s 17th confirmed case in an equid in 2020.

Topics: Diseases and Conditions, Eastern Equine Encephalitis (EEE), Horse Care, Horse Industry News, Neurologic Disease, Welfare and Industry

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Mosquitoes that feed on EEE-infected birds can transmit the virus to humans, horses, and other birds. | Photo: Thinkstock

Officials at Clemson Livestock Poultry Health (CLPH) have confirmed a 15-year-old Shetland pony mare with Eastern equine encephalomyelitis (EEE). The mare, which resided in Clarendon County, was unvaccinated and is deceased.

This is Clarendon County’s first case of EEE in an equine this year, and South Carolina’s 17th.

EEE 101

Eastern equine encephalomyelitis is caused by the Eastern equine encephalitis virus, for which wild birds are a natural reservoir. Mosquitoes that feed on EEE-infected birds can transmit the virus to humans, horses, and other birds. Horses do not develop high enough levels of these viruses in their blood to be contagious to other animals or humans. Because of the high mortality rate in horses and humans, EEE is regarded as one of the most serious mosquito-borne diseases in the United States

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Written by:

Diane E. Rice

Diane Rice earned her bachelor’s degree in agricultural journalism from the University of Wisconsin, then married her education with her lifelong passion for horses by working in editorial positions at Appaloosa Journal for 12 years. She has also served on the American Horse Publications’ board of directors. She now freelances in writing, editing, and proofreading. She lives in Middleton, Idaho, and spends her spare time gardening, reading, serving in her church, and spending time with her daughters, their families, and a myriad of her own and other people’s pets.