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Extent of Utah's cases

West Nile virus infections in Utah, 2004:

Human: 11 in six counties: Box Elder, Davis, Utah, Duchesne, Salt Lake and Washington.

Mosquito pools (144 positive of 3,489 tested) from Duchesne, Grand, Salt Lake, San Juan, Uintah and Washington counties.

Horses: five, from Grand, Salt Lake, Uintah and Washington counties.

Sentinel chickens: 28 of 360 tested, in Duchesne, Emery, Grand and Washington counties.

Birds: three of 200 submitted, from Grand (magpie), Kane (raven) and San Juan (scrub jay) counties.

Source: The Utah Department of Health