Five Michigan Horses Die of EEE

All five horses, from three widespread counties, were unvaccinated.

No account yet? Register


Five Michigan Horses Die of EEE
Mosquitoes that feed on EEE-infected birds can transmit the virus to humans, horses, and other birds. | Photo:
Officials at the Michigan Department of Agriculture and Rural Development (MDARD) have announced five additional confirmed equine cases of Eastern equine encephalomyelitis (EEE) in three counties: Jackson, Kent, and Tuscola.

The three Jackson County (in south-central Michigan) horses tested positive for the virus on Oct. 4:

  • An unvaccinated 5-year-old Quarter Horse mare that first showed clinical signs (lethargy and recumbency—down and unable to rise) on Sept. 26 and was euthanized.
  • An unvaccinated 5-year-old Quarter Horse gelding that presented on Sept. 26, with clinical signs of recumbency and running in place while down. He was also euthanized.
  • An unvaccinated 7-year-old Standardbred mare that began showing clinical signs Sept. 29. She was reported as deceased.

One horse from Kent County (in west-central Michigan), an unvaccinated 20-year-old Percheron gelding, presented on Sept. 29 with clinical signs that included decreased nerve function, inappetence, and lethargy. He succumbed to the disease on Oct. 2, and test results confirmed him positive on Oct. 4.

The final positive test result belonged to an unvaccinated 8-year-old Belgian gelding from Tuscola County (in east-central Michigan) that experienced onset of clinical signs, including fever, rapid back-and-forth eye movements, inability to stand, and paddling with his legs, on Sept. 29. He was subsequently euthanized and confirmed on Oct. 7

Create a free account with to view this content. 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

Start your free account today!

Already have an account?
and continue reading.


Written by:

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from

Sponsored Content

Weekly Poll

sponsored by:

Do you use slow feeders or slow feed haynets for your horse? Tell us why or why not.
356 votes · 356 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with!