It took 16 years of twists and turns. Over and over, NIH’s Dr. Nancy Sullivan thought she was close to an Ebola vaccine, only to see the next experiment fail. But it is those failures that Sullivan credits for finally leading her to a vaccine promising enough to test in parts of West Africa ravaged by Ebola. Last week, volunteers in Liberia's capital began rolling up their sleeves for the first large-scale testing of two potential Ebola vaccines, the one Sullivan developed at NIH and a similar one created by Canada's government. "Thank God we had some of these" underway, said UTMB’s Thomas Geisbert, an early collaborator on the Canadian vaccine who helped with some of Sullivan's initial work and now researches treatments. "You can't do that research in six months.” The news also appeared in Yahoo! News, The Dallas Morning News, CBS-Washington, DC and The Denver Post, among others.