Three Michigan Horses Confirmed With EEE

The cases bring the state’s 2021 equine total to seven.
Share
Favorite
Close

No account yet? Register

ADVERTISEMENT

Three Michigan Horses Confirmed With EEE
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. | Photo: iStock

Michigan Department of Agriculture and Rural Development (MDARD) officials have confirmed three new equine cases of Eastern equine encephalomyelitis (EEE). The affected horses include one in Genesee and two in Shiawassee counties.

The cases bring Michigan’s equine total to seven cases: one each from Barry, Genesee, and Otsego counties and two each from Livingston and Shiawassee counties.

A Livingston County deer also tested positive, and one EEE-positive mosquito pool was discovered in Barry County. No human cases were identified in 2021.

In 2020, Michigan confirmed 41 animal cases and four human cases.

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.

Health Alert: EEE, WEE, and VEE
VIDEO | Health Alert: EEE, WEE, and VEE

Tips for preventing mosquito-borne diseases include:

  • Avoid mosquito bites: Use insect repellent when outdoors, especially from dusk to dawn.
  • Look for EPA-labeled products containing active ingredients such as DEET, picaridin (KBR3023), or oil of lemon eucalyptus (p-menthane 3,8-diol).
  • Apply more repellent, according to label instructions, if mosquitoes start to bite.
  • Mosquito-proof homes: Fix or install window and door screens, and cover or eliminate empty containers with standing water where mosquitoes can lay eggs.
  • Protect your horses: Veterinarians recommend commercially available licensed vaccines against EEE for all horses in the U.S. Horses should be vaccinated at least annually (recommendations vary in high-risk areas). It’s not too late this year to vaccinate your horses.
  • Use approved insect repellents to protect horses.
  • If possible, put horses in stables, stalls, or barns during the prime mosquito exposure hours of dusk and dawn.
  • Eliminate standing water, drain water troughs, and empty buckets at least weekly.
  • Stock water tanks with fish that consume mosquito larvae (contact your local mosquito control for assistance), or use mosquito “dunks” (solid “donuts” of Bacillus thuringiensis israelensis, which are nontoxic to horses) available at hardware stores.

Share

Written by:

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Sponsored Content

Weekly Poll

sponsored by:

What lameness issues has your horse experienced? Select all that apply.
249 votes · 499 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 TheHorse.com!