Mosquitoes with the West Nile virus found in Louisiana have prompted local efforts, including spraying by VDCI, to reduce populations and potential health risks.

Two mosquito samples collected in Hyde Park and West Roxbury tested positive for West Nile Virus— the first positive samples in Boston this summer. Mosquitoes carry West Nile Virus, which spreads to humans through bites from infected mosquitoes. The risk of transmission is low, but on Tuesday the city urged residents to take precautions.

Health officials in Fort Bend County, just outside Houston, have confirmed their first mosquito sample infected with West Nile virus this year. The infected mosquitoes were collected in the Katy area,