Washington Horse Confirmed to Have Equine Influenza

Ten additional horses in Whatcom County have been exposed.
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Washington Horse Confirmed to Have Equine Influenza
The Whatcom County horse that tested positive, an unvaccinated yearling stallion, experienced clinical signs that included coughing and nasal discharge beginning on Dec. 24. | Photo: Wikimedia Commons
On Dec. 27, 2019, Washington State Department of Agriculture (WSDA) officials confirmed a Whatcom County horse was infected with equine influenza (EI) and an  additional 10 animals were exposed. The horse that tested positive, an unvaccinated yearling stallion, experienced clinical signs that included coughing and nasal discharge beginning on Dec. 24. He is reported as recovering and a voluntary quarantine is in effect.

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 human’s 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

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