
Oregon Horse Confirmed to Have West Nile Virus
Union County officials have confirmed that a horse near LaGrande, Ore., has West Nile virus.
Horse-health-problem risk factors, prevention, diagnosis, and treatment

Union County officials have confirmed that a horse near LaGrande, Ore., has West Nile virus.
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Two Ontario, Canada, horses tested positive for Potomac horse fever (PHF) in early August.

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The 7-year-old Cape May County gelding was euthanized after developing neurologic signs consistent with EEE.
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The requirement for a negative Coggins test for horses entering the state changed from six months to one year.
A case of Eastern equine encephalitis (EEE) has been confirmed in a horse in Worcester County, Md.
An unvaccianted 12-year-old mare from Van Buren County tested positive for EEE.
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A 3-month-old colt from Montezuma County, Colo., has tested positive for West Nile virus.
Joshua Stern, DVM, PhD, Dipl. ACVIM, will be working on large animals at UC Davis.
Authorities confirmed the state’s sixth case of equine West Nile virus (WNV) for 2013 on Aug. 13.
The 5-year-old Quarter Horse mare–who has no WNV vaccination history within the past year–is recovering.
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