Boulder County Public Health and Weld County both confirmed within two days that there have been the first positive tests of ...

Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West ...

West Nile virus has been found in Boulder County. Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West Nile.

The state’s West Nile virus season appears to be ahead of schedule this year, after two more Colorado counties detected the ...

West Nile virus has been found in Boulder County. Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West Nile.