West Nile virus has been found in a group of mosquitos in Utah County, that county's health department has reported.

Symptoms of illness may appear three days to two weeks after an infection, Weld County said last week. Most people show no ...

Older adults and immunocompromised people can be at higher risk for developing serious illness or death, the Oregon Health Authority said.

Mosquito samples collected in six areas in Allegheny County have tested positive for West Nile Virus, according to the county ...

Mosquitoes carrying the West Nile virus have been identified in Oregon for the first time this year, according to the Oregon Health Authority.

Less than 1% of West Nile virus cases progress to West Nile encephalitis, with symptoms that include high fever, headache, neck stiffness, muscle weakness, disorientation, tremors or convulsions ...

Boulder. Today’s BRL Today is sponsored by SVP Boulder County — learn more about becoming a Partner Member or getting nonprofit support. Leading today’s edition: a closer look at who gets celebrated ...

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

Mosquitoes in two Weld County zones have tested positive for West Nile Virus, though no human cases have been reported yet.

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 ...