Feb. 10, 2010, 12:17 p.m.
23 September 2008
The state Health Department says positive tests for West Nile virus in one dead bird in King County and one in Thurston County are the first time this year the disease has been found in animals in Western Washington (Seattle Times).
The birds were collected earlier this month.
The department says the virus is a threat until the first frost kills mosquitoes.
The virus was previously confirmed in Eastern Washington - one human case, two probable human cases, and more than two dozen horses, nine birds and 40 mosquito pools.