The Denver Department of Public Health and Environment announced Monday that the city's first human case of West Nile virus this season has been confirmed. Officials in Jefferson County have also confirmed their first human cases of the virus,

Eleven people in Colorado have tested positive for West Nile this year, including five who developed neurologic symptoms and three who needed hospital care. One person died from the virus.

In a disturbing reminder of how quickly viral epidemics come back into the picture, the West Nile Virus (WNV) has recently reappeared as a public health issue in Europe. With confirmed infections in at least five nations and an increasing number of fatalities,