Public health tests base mosquitoes, results negative for West Nile virus
Members assigned to the 28th Medical Group public health flight stand in front of their office at Ellsworth Air Force Base, S.D., Aug. 28, 2018. The public health flight continuously captures local mosquito samples that are sent out and analyzed for diseases by the U.S. Air Force School of Aerospace Medicine at Wright-Patterson AFB, Ohio. (U.S. Air Force photo by Airman 1st Class Thomas Karol)