Colorado health officials said mosquitoes carrying the West Nile virus have been found in Adams, Boulder, Denver, Larimer and Weld counties.

Southland residents are being asked to take precautions after health officials found mosquito samples testing positive for ...

The Contra Costa Mosquito and Vector Control District has detected West Nile Virus in the area, the District confirmed. A California scrub jay in San Ramon tested positive for the virus, the District ...