State health officials say the mosquitoes are the first in Maine to test positive for any mosquito-borne virus this year.

New Orleans has confirmed a second case of neuroinvasive West Nile virus, with a third under investigation. Mosquito spraying begins tonight.

West Nile virus is the leading cause of mosquito-borne disease in the continental U.S. Most people who are infected with the virus are asymptomatic, but others can develop fever, and about 1 in 150 people who are infected develop a serious and sometimes fatal illness.

West Nile virus cases are on the rise across the country as mosquito season begins, according to public health officials. The Arkansas Department of Health is currently reporting fewer than five cases of the virus.

This article has been updated to reflect that both individuals had Cañon City addresses, but the department is not given information on where the contact may have occurred.

The Health Department of Northwest Michigan has confirmed a human case of West Nile virus in Emmet County. West Nile virus is

Due to the spread of tiger mosquitoes, France is now reporting rising numbers of cases of what were previously considered to be 'tropical' diseases such as chikungunya, Zika, dengue fever and West Nile virus.