Thomas Duncan was not showing signs of Ebola as he flew to Dallas on two United Airlines flights. The airline is voluntarily contacting passengers on those flights, even though Ebola is only infectious when a person has symptoms. Dan Simon visited an airplane hangar in California to learn more about how dangerous Ebola can be on a plane.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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