Local health officials say Chicago has reached a “high risk” level of the West Nile virus because mosquitoes are testing ...

The risk for West Nile virus is high in 10 cities and towns in Massachusetts, including Boston, public health officials say.

West Nile virus has been detected in a mosquito sample in New Bedford for the second time in recent weeks. The Massachusetts ...

Mosquitoes in Boone County tested positive for West Nile virus on July 30. No human or bird cases have been reported so far.

The risk for West Nile virus is now considered "high" in 10 Massachusetts communities. See which cities and towns are on the ...

West Nile virus activity is on the rise in some northern California counties, according to the Sacramento-Yolo Mosquito and Vector Control District. Three dead birds and 13 mosquito samples tested ...

Vanderburgh County has joined the list of local Indiana communities reporting the West Nile virus in mosquitoes.

The Kalamazoo County Health & Community Services Department's Environmental Health Division confirmed the first positive ...

The Salt Lake County Health Department says the first human case of West Nile virus has been detected in Utah for the year.

The Iowa Department of Health and Human Services has reported the first positive case of West Nile virus of the year in an ...

Iowa officials have confirmed the state's first case of West Nile virus this year, prompting health warnings about mosquito activity.

Mosquitoes in Boone County have tested positive for West Nile Virus, and the Health Department recommends taking personal precautions to avoid mosquito bites and reducing the number of mosquitoes ...