barnett. welcome to those of you watching in the united states and around the world. >> test results came back positive just a few hours ago for this man, craig spencerold doctor who recently returned from west africa. he developed a high fever and other ebola-like symptoms early thursday and is now in isolation in bellevue hospital there in new york. that's the city's designated ebola treatment facility. >> and here's what we know about his background. dr. spencer went to guinea in mid september with doctor without borders. he had been back in new york for six days before he began feeling ill. >> we know that he left his pardon me and went on a three-mile jog. a sign that he was feeling quite well. and he also took the subway system. we know that he's ridden on the a train, the number 1 train, the l train. we're still getting more information about this. but we know that yesterday that he went to a bowling alley in williamsburg. he was feeling well at that time, and except for his feeling of fatigue. >> now at this moment, it's just past 12:30, late at night on the u.s. east coast. and a cdc response team, centers for disease control, was due to arr