 This is the worst it's been in 10 years. The worst infestation of mosquitoes, that is. The city of Sioux Falls is trapping, counting, and testing mosquitoes looking for West Nile disease. Brandon, Harrisburg, and Tee are also increasing their spraying efforts to fight the surge. From the Kello.com News Center, I'm Tom Rooney. The news never stops. Kello News Talk 1320-107.9.