Health departments in the U.S. report finding West Nile virus in mosquito samples, including Cape May County, Denton County, and Suffolk County.
Only 25 human cases of West Nile virus have been reported in 14 states this year, a decrease from 117 cases at the same time last year.
Suffolk County, NY, has reported 32 positive mosquito samples this season, with virus detection confirmed across all five boroughs of New York City.
Mosquitoes become infected with West Nile virus after feeding on infected birds and then transmit it to humans and animals.
Most people do not exhibit symptoms, but about 20% experience fever, headaches, body aches, and other symptoms. Severe cases can lead to encephalitis or meningitis.
Out of 25 reported cases this year, 11 have resulted in neuroinvasive disease, which can lead to severe complications or death.
No vaccines or specific treatments are available. The CDC advises using insect repellant, wearing protective clothing, and controlling mosquito populations.
For severe cases, hospitalization and supportive treatments such as intravenous fluids may be necessary.