Dallas County Health and Human Services says the county's first positive West Nile virus mosquito traps have been collected for the 2016 season.
The WNV-positive mosquitoes were trapped May 10 and 11, but the location of the traps was not disclosed.
No plans to spray pesticide in the fight against mosquitoes were announced.
Positive West Nile virus traps have also been collected in recent weeks in Arlington and Lewisville, indicating an early wide distribution of West Nile virus in the local mosquito population, according to DCHHS.
No confirmed human cases of West Nile virus have been reported so far this year in North Texas.