By Kristin Espeland
Laramie, WY – Wyoming's first case of West Nile virus this year has turned up in a man from Fremont county. Last year, the mosquito-borne virus infected more people in that county than in any other, sickening some and killing others.
State epidemiologist Doctor Tracy Murphy says the landscape may be the key -- the counties with more water have more mosquitoes.
In 2003, nearly 400 Wyomingites caught the virus. That number dipped over the next couple of years but it's since been on the rise. Murphy says it's too soon to tell whether that's a real trend and, if so, what's driving it.