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News from Wyoming Department of Health

Final Wyoming West Nile Numbers Reported for 2009


The final count of laboratory-confirmed West Nile virus infections reported in Wyoming residents was 12 this year, according to the Wyoming Department of Health.

Four of the reported case patients were from Fremont County, three from Goshen County, two from Platte County, and one each from Converse, Campbell and Washakie counties.

There was one West Nile virus-related death this year in a Washakie County resident. Four cases involved the more serious West Nile neuroinvasive disease (meningitis or encephalitis). Of the 12 cases statewide, three patients required hospitalization.

The reported dates for the onset of symptoms began May 15 and ended September 7. The cases were evenly distributed among both genders. Ages of those infected ranged from 30 to 71.

In 2008, 10 cases and no deaths were reported in Wyoming. There were 184 human cases and one death were reported in 2007; 65 human cases with two deaths in 2006; 12 human cases with two deaths in 2005; 10 human cases with no deaths in 2004; and 393 human cases with nine deaths in 2003.

More information on West Nile virus is available on the web at

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