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Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



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Equine Influenza
Deschutes county, OR
Alert ID: 53
June 25, 2015
June 23, 2015--An outbreak of acute respiratory disease occurred in several horses that attended the Far West Championship Horse Show held at the Deschutes County Fairgrounds in Redmond, OR this past weekend. The Oregon State University-Veterinary Diagnostic Lab test results were negative for Equine Herpes Virus-1 (EHV-1) and EHV-4 and positive for Influenza A. Veterinarians from the Bend Equine Medical Center provided veterinary oversight for the show. Further details regarding the outbreak can be found on their website and their Facebook page. Disease signs in the affected horses included acute onset with fevers, coughing, nasal discharge, and lethargy. No horses demonstrated any neurological signs, and no horses have required hospitalization. The Far West Horse Show management has been very cooperative in working with the show veterinarians in managing this issue. The majority of the weekend events were cancelled. There have been no state quarantines issued. Owners of all affected horses have been instructed to self-quarantine their horses at home for two weeks, and owners of all horses that attended the show are asked to monitor their horses for fevers or other signs of infection. Equine influenza is caused by the orthomyxovirus equine influenza A type 2 (A/equine 2) and is one of the most common infectious diseases of the respiratory tract of horses. Concerned horse owners are advised to contact their veterinarian if they have questions and for developing an appropriate prevention plan, including vaccination. Horse owners should practice basic every day biosecurity to protect their horse(s) from being exposed to this virus as well as other highly contagious pathogens.
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