The Brief Buda mosquito trap tests positive for West Nile Fifth such trap in Hays County for 2026 No human cases in Hays County so far this yearA mosquito trap in Buda has tested positive for West Nile virus. This is the fifth trap to test positive in Hays County so far this year. Infected mosquitoes can transmit West Nile through bites. There is currently no treatment for West Nile virus. Drain: Drain or treat all standing water in and around your home or workplace where mosquitoes could lay eggs.