1 of 3. Dr. Martin Salia is placed on a stretcher upon his arrival at the Nebraska Medical Center Biocontainment Unit in Omaha, Nebraska, November 15, 2014.
Health and Human Services Secretary Sylvia Mathews Burwell, Center for Disease Control Director Dr. Thomas Frieden and Dr. Anthony Fauci, the director of NIH's National Institute of Allergy and Infectious Diseases testify before the Senate Appropriations Committee on the U.S. government response to the Ebola outbreak in Washington November 12, 2014.
A woman, who underwent sterilization surgery at a government mass sterilisation 'camp', walks to sit in a hospital bed at a district hospital in Bilaspur, in the eastern Indian state of Chhattisgarh, November 13, 2014.
People holding mobile phones are silhouetted against a backdrop projected with the Twitter logo in this illustration picture taken in Warsaw September 27, 2013.