For immediate release: May 31, 2007 (07-085)

Contacts:
Tim Church, Communications Director 360-236-4077
Donn Moyer, media relations manager 360-236-4076

West Nile virus monitoring underway around the state
Health officials say this could be an active West Nile virus year

OLYMPIA ¾ West Nile virus established itself in Washington last year, and the search for signs of where the disease may be has resumed across the state for 2007. Mosquitoes and dead birds are being tested for the virus in an effort to provide an early warning to communities.

In 2006, the first three human West Nile virus infections acquired in Washington were reported. If Washington follows the trend seen in other states, there could be more human infections this season. Idaho had more than 1,000 human West Nile virus infections resulting in 23 deaths last year – after reporting only three human infections in 2004. Oregon had 73 human West Nile virus infections last year with one death.

"Mosquito samples and dead birds are often the first warning that the disease has arrived in an area," said Nancy Napolilli, director of the Office of Environmental Health and Safety. "Local communities can then increase their monitoring and mosquito control, and let residents know how to protect themselves."

In 2006, 13 dead birds tested positive for West Nile virus in Washington. Crows, jays, magpies, ravens, and raptors are more likely to die from West Nile infection than other birds – making them ideal candidates for testing. Whenever these types of birds are found dead, it should be reported to the local health agency in the area. Not all dead birds will be collected for testing.

Mosquitoes that can pick-up West Nile virus from birds and transmit the disease to people are also targeted for testing. Several local health agencies, mosquito control districts, and volunteer groups are trapping adult mosquitoes for testing.

The best protection against West Nile virus is to avoid mosquito bites. Stay indoors when mosquitoes are most active (dusk to dawn), cover exposed skin, and use an effective repellent. Reduce mosquito breeding habitat around the home by dumping standing water; change water in birdbaths, fountains, wading pools, and animal drinking containers once or twice a week.

West Nile infection can be very serious, and even fatal, for some people. While most people bitten by a mosquito carrying West Nile virus don’t become ill, some may have mild to severe flu-like symptoms. A small number of people may develop a serious neurological disease. People over 50 and those with compromised immune systems are at greater risk for serious illness.

More information is available by calling the agency’s West Nile virus information line 1-866-78-VIRUS (1-866-788-4787). Information can also be found at the agency’s West Nile virus Web site (www.doh.wa.gov/WNV) or the federal Centers for Disease Control and Prevention West Nile virus Web site (www.cdc.gov/ncidod/dvbid/westnile/index.htm).

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