First Case of West Nile Virus Detected in Washington State for 2010

Grant County Mosquito Control District #1 has been monitoring for the virus since early spring and spraying in areas with high mosquito populations. The district plans to continue spraying for mosquitoes this week. Call 509-765-7731 for information about the spraying schedule.

Last year in the state, West Nile virus was detected in 22 dead birds, one dog, 346 mosquito samples, and 72 horses. Half of the infected horses died or were euthanized. Contact a veterinarian to learn about horse vaccines; it’s not too late to vaccinate horses against West Nile. There were also 38 human cases reported including one death in 2009, with all exposures in Eastern Washington or out of state.

The best strategy against diseases transmitted by mosquitoes is to use bug repellant and wear long pants and sleeves outdoors when mosquitoes are active. Stop mosquitoes in their tracks by getting rid of standing water that collects around your home. Dump water in wading pools, tires, or old flower pots. Change water in pet dishes and bird baths at least once a week; twice a week is preferred. Keep screens in working order to keep mosquitoes from getting inside the home.

For some people, West Nile infection can be very serious, and even fatal. Some people may develop meningitis or encephalitis; some neurological effects may be permanent. The majority of people bitten by a mosquito carrying the virus won’t become ill, yet some may have mild symptoms including headache and fever that go away without treatment. People over 50 and those with weak immune systems are at higher risk for serious illness.