What is West Nile virus?
West Nile virus, which causes West Nile fever, encephalitis and meningitis, is a mosquito-borne virus that first appeared in the United States in 1999. After being found in bird populations in the metropolitan New York area, it has since spread across the United States. As of fall 2006, six birds and one horse with West Nile Virus have been reported in King County.
How is West Nile Virus Transmitted?
- By mosquitoes that feed on birds infected with the virus.
What are the Risks to Humans?
- 80% of people who become infected never get symptoms.
- Persons who become ill develop symptoms 3-14 days after being infected.
- About one in five people infected by the virus develop West Nile fever, a typically mild illness that causes fever, muscle aches, fatigue, headache and joint pain. These persons recover fully and do not require hospital care.
- A smaller number of infected persons, 1%, develop encephalitis or meningitis with symptoms of high fever, neck stiffness, confusion, disorientation, coma, tremors, convulsions, muscle weakness, and paralysis.
- Persons who are older than 50 years, particularly those who are greater than 70 years of age, are more likely to develop the serious forms of West Nile virus infection.
- For more info, please visit King County's website.
What can residents do to protect themselves?
The best way for citizens to minimize the threat of West Nile virus and to protect themselves and their families is to control mosquito populations on their property and prevent exposure to mosquitoes. Following the tips below will help residents reduce their risks:
- Make sure window and door screens are "bug tight." Repair or replace if needed.
- Stay indoors at dawn and dusk when mosquitoes are the most active.
- Wear a long sleeve shirt, long pants, and a hat when going into mosquito-infested areas.
- Use mosquito repellant when necessary, and carefully follow directions on the label.
Empty anything that holds standing water—old tires, buckets, plastic covers, and toys. - Change water in your birdbaths, fountains, wading pools and animal troughs weekly.
- Make sure roof gutters drain properly, and clean clogged gutters in the spring and fall.
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Please do not apply chemicals or other pollutants to streams, lakes, or wetlands (or to water that may flow into them). Remember that natural predators such as dragonflies, fish, and frogs help reduce mosquito populations
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For more info, please visit King County's website.
What are the risks to animals?
- West Nile virus affects horses, mules, donkeys and other equines much more often than other animals. A vaccination for horses is available; horse owners should contact their veterinarian for advice on West Nile Virus.
- For more info, please visit King County's website.
How do I report a dead bird?
Report dead crows to the Public Health Seattle and King County at (206) 205-4394.
For more info, please visit King County's website.
What is the City of Kirkland doing in response to West Nile Virus?
The city of Kirkland is educating City residents and employees about personal protection measures. Educational materials are being distributed through utility bills, at Kirkland City Hall, and at special events.
Who do I contact for more information?
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