Marie-Paule Kieny, Assistant Director General for Health Systems and Innovation of the World Health Organization (WHO), speaks during a press conference at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Oct. 21, 2014. Dr Marie-Paule Kieny, says clinical trials planned or under way in Europe, Africa and the U.S. are being accompanied by a push among governments for immediate “real-world use” of an approved Ebola vaccine. She told reporters Tuesday in Geneva that, if the vaccines are deemed safe, tens of thousands of doses would be used in a West African trial in January. (AP Photo/Keystone,Martial Trezzini)