Equine Influenza Confirmed in Oregon Horse

Four more horses at the facility are suspected positive.
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Clackamas County, Oregon
Four more horses at the Clackamas County facility are suspected positive. | Photo: Wikimedia Commons

​An attending veterinarian in Oregon has confirmed a positive test for equine influenza (EI) in a 17-year-old Quarter Horse gelding at a Clackamas County boarding facility. Four more horses at the facility are suspected positive.

The affected horse presented with clinical signs that included fever, coughing, and nasal discharge. His vaccination status is unknown, and he is reported as recovering.

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.

RELATED CONTENT | Health Alert: Equine Influenza (Video)

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.

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