The Marshall County Health Department is issuing a public health alert after it says West Nile Virus was detected in five pools of mosquitoes in the county. West Nile Virus is transmitted to humans by mosquitoes that have bitten an infected bird.

FLOYD COUNTY, Ind. — West Nile virus-carrying mosquitoes are still active in Floyd County, according to health administrators. The Floyd County Health Department announced on Friday that a mosquito sample collected several weeks ago tested positive for the virus. This is the fourth positive sample found in the county since late July.

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.

A mosquito sample collected the week of Aug. 3 in Floyd County, Indiana, tested positive for the West Nile Virus, county health officials said Friday.

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.

An American crow from Walnut Creek is the second bird to test positive for West Nile virus, the Contra Costa Mosquito and Vector Control District said. Birds are the main reservoir for the virus, which is transmitted to humans and animals through the bite of an infected mosquito.