 1100 KNZZ, news you can depend on. Good afternoon, I'm Libby Pelletier in the News Center. The second human case of West Nile virus in Colorado has been confirmed in Mesa County. The health department urging residents to protect themselves from mosquito bites. Most people infected do not get sick, but those who do experience symptoms ranging from mild illness to severe encephalitis or inflammation of the brain. People over 50 are at the highest risk.