When a high-risk patient is evacuated, strict precautions are followed. Above, aid workers and doctors in protective gear transfer Manuel Garcia Viejo, a Spanish priest diagnosed with Ebola, to a waiting ambulance at a Madrid airport.
Spanish Defense Ministry/AP
Dr. Kent Brantly was medical director at Monrovia's only Ebola treatment center when he fell ill with the disease in July. He survived after being evacuated and treated in the United States.
Courtesy of Samaritan's Purse
Dr. Rick Sacra, who had worked in Liberia in previous years, went back in August to tend to pregnant women and to children. The 51-year-old Massachusetts family physician is the third American to contract the Ebola virus.
Courtesy of SIM
Ebola virus survivor Dr. Kent Brantly (center) and his wife, Amber (left), walk at a news conference at Emory University Hospital in Atlanta Thursday. Brantly and aid worker Nancy Writebol were discharged from the hospital less than a month after they contracted Ebola while treating patients in Liberia.
Erik S. Lesser/EPA/LANDOV