KING COUNTY, WASHINGTON - A horse died in King County from West Nile virus on October 8th, providing additional evidence that the virus is becoming widespread in King County. This was the first equine case of West Nile to occur in King County, though other horses have become in infected in Washington State. The horse lived in the Ravensdale/Maple Valley area.

The horse was an eleven year old paint gelding, and had been vaccinated against West Nile virus in 2005 but had not received a booster in the past year. It is generally recommended that horses receive an initial series of vaccine and then get an annual vaccine thereafter. Horse owners should check with their veterinarians for specific information.

West Nile virus is spread to people and to horses by mosquitoes that have bitten infected birds. West Nile can cause serious illness, especially in older age adults. While heavy rains and colder temperatures have significantly reduced the number of mosquitoes, the public is still urged to minimize the chances that they will be bitten by a mosquito. Prevention tips may be found at www.metrokc.gov/health/westnile.

Updated West Nile virus surveillance findings will be reported on Public Health’s website at www.metrokc.gov/health/westnile.

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