DR MARC SIEGEL, JENNIFER JOHNSON: Meet the angel doctors fighting hantavirus

Dr. David Brett-Major, an infectious disease doctor, is part of a team bringing 18 passengers back from the Canary Islands to Nebraska for quarantine due to potential exposure to the Andes strain of hantavirus. The team is working to contain the virus and provide medical care. Dr. Brett-Major has extensive experience with high-risk pathogens, including Ebola.