Two New York Horses Recovering From WNV

Neither horse was vaccinated against the mosquito-borne disease.
Share
Favorite
Close

No account yet? Register

ADVERTISEMENT

Two New York Horses Recovering From WNV
WNV transmission occurs when infected mosquitoes feed on animals, as well as humans, after having fed on infected birds. | Photo: iStock

Officials at the New York Department of Agriculture and Markets (NYDAM) have confirmed two horses with West Nile virus (WNV). The horses reside on farms in Lewis and Yates counties.

The Lewis County horse, an 8-year-old mare, began showing signs consistent with WNV on Sept. 18. Her signs included facial twitching, hyper-reactivity, dog sitting, and recumbency (down and unable to rise).

The horse from Yates County, a 13-year-old gelding, began experiencing clinical signs, which included hypersensitivity to touch, crossing his forelegs, severe agitation, and recumbency on Sept. 23.

Neither horse was vaccinated against WNV. Both are reportedly recovering.

About West Nile Virus

WNV transmission occurs when infected mosquitoes feed on animals, as well as humans, after having fed on infected birds.

Health Alert: West Nile Virus in Horses
VIDEO | Health Alert: West Nile Virus in Horses

Clinical signs of WNV in horses include:

  • Mild anorexia and depression
  • Fine and coarse muscle and skin fasciculation;
  • Hyperesthesia (hypersensitivity to touch and sound);
  • Changes in mentation (mentality), when horses look like they’re daydreaming or “just not with it”;
  • Occasional drowsiness;
  • Propulsive walking (driving or pushing forward, often without control);
  • Spinal signs, including asymmetrical weakness; and
  • Asymmetrical or symmetrical ataxia.

West Nile virus has no cure; however, some horses can recover with supportive care. Equine mortality rates can reach 30-40%. The American Association of Equine Practitioners includes WNV as one of the core diseases all horses should be vaccinated against at least annually.

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:

Has your veterinarian used SAA testing for your horse(s)?
87 votes · 87 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!