Erin Burnett, Katherine Dillinger, Deidre McPhillips, CNN Dr. Stephen Kornfeld, a passenger from the MV Hondius cruise ship who had tested “faintly positive” for hantavirus, has now tested negative and been moved out of a Nebraska biocontainment unit. Kornfeld, 69, an Oregon oncologist, had helped care for ill passengers aboard the cruise ship and himself developed a “flu-like illness,” he said on CNN's Erin Burnett OutFront on Tuesday.