Support WBURWest Nile Cases Still Climbing As Temperatures DropHelen ThompsonNovember 07, 2012 ShareMosquitoes are sorted at the Dallas County mosquito lab in Dallas, Texas on Aug. 16, 2012. Dallas County has seen the highest number of cases of West Nile virus of any county in Texas: 379 this year, as of Oct. 25. (ASSOCIATED PRESS)