Equine Influenza in Two Washington Counties
Map of King County and Pierce County, Washington, two counties that have confirmed equine influenza.
Two horses in Washington, who reside in King County and Pierce County, have tested positive for equine influenza. | Wikimedia Commons

Two horses in Washington are positive for equine influenza. The first horse resides at a private facility in King County and is under private veterinary care. The horse recently attended a drill practice with other horses. It is unknown how many horses were exposed.

The second horse resides at a private facility in Pierce County. It is under veterinary care at home with three other exposed horses, and it has recovered.

EDCC Health Watch is an Equine Network marketing program that utilizes information from the Equine Disease Communication Center (EDCC) to create and disseminate verified equine disease reports. The EDCC is an independent nonprofit organization that is supported by industry donations in order to provide open access to infectious disease information.

About Equine Influenza

Equine influenza is a highly contagious respiratory disease that infects horses, ponies, and other equids, such as donkeys, mules, and zebras. The virus that causes it is spread via saliva and respiratory secretions from infected horses. Horses are commonly exposed via horse-to-horse contact; aerosol transmission from coughing and sneezing; and contact with humans’ contaminated hands, shoes, or clothes or contaminated tack, buckets, or other equipment.

Clinical signs of equine influenza infection can include a high fever (up to 106°F); a dry, hacking cough; depression; weakness; anorexia; serous (watery) nasal discharge; and slightly enlarged lymph nodes. Consider monitoring your horse’s health at shows by taking his temperature daily, which can help you pick up on signs of infection early and take appropriate measures to reduce disease spread.

​Vaccination is an important and inexpensive way to protect your horse. US Equestrian requires proof that horses have had an equine influenza vaccination within the six months prior to attending organization-sanctioned competitions or events. Your veterinarian can help you determine what other vaccines your horse might benefit from.

In addition to vaccinating, following strict biosecurity protocols can help reduce your horse’s chance of infection and disease. Such measures include quarantining new equine arrivals at barns, disinfecting buckets and equipment, and preventing nose-to-nose contact between horses.

Read common questions and answers about equine influenza here:

Brought to you by Boehringer Ingelheim, The Art of the Horse

Topics:
RELATED
BIG CHECKS, BIGGER HEARTS
Inaugural Cowtown Showdown Raises $85K for Kids Fighting Cancer
Florida Horse Euthanized After Contracting Strangles
2 California Horses Test Positive for EIA
Here's Who is Headed to Vegas
Gabriel Borges Wins 2026 The Run For A Million Qualifier, Final 16 Riders Set for Las Vegas
2 Texas Horses Euthanized After Testing Positive for EIA
Who Will Head to Vegas?
One Run. One Chance. The Qualifier Opens the Door to the Run for a Million 
⎯ KEEP READING ⎯

Sign up for EDCC Health Watch text alerts to get notified when an equine disease outbreak is reported in your state or region.

Horse&Rider
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.