More signs of West Nile virus have cropped up this summer in Contra Costa County, this time in Knightsen, officials said. A group of mosquitoes collected from a trap in Knightsen, a community in eastern Contra Contra,

According to data trap results taken on July 25, mosquitoes carrying West Nile virus were detected in every Staten Island ZIP code, according to the Health Department. The city has been conducting aerial larviciding treatments of marshes and wetlands across the borough, according to a recent announcement.

North Carolina's first case of West Nile virus in 2025 has been confirmed, state health officials announced Wednesday.