MONROVIA, LIBERIA - FEBRUARY 02: A nurse administers an injection on the first day of the Ebola vaccine study being conducted at Redemption Hospital, formerly an Ebola holding center, on February 2, 2015 in Monrovia, Liberia. Twelve people were given injections Monday, out of a planned 27,000 people in the Monrovia area. The clinical research study is being conducted jointly by the U.S. National Institutes of Health (NIH), and the Liberian Ministry of Health. The Ebola epidemic virus has killed at least 3,700 people in Liberia alone, the most of any country, and nearly 9,000 across in West Africa. In background of photo is Dr. Clifford Lane, Clinical Director of the U.S. National Institute for Allergy and Infectious Diseases. (Photo by John Moore/Getty Images)
Getty Images

Getty Images News John Moore