Ebola has riveted - and terrified - the world since its reemergence from the jungle, killing more than eleven thousand people in West Africa since December 2013. Using proper protective gear, safe burial protocols, cleansing techniques, and educational outreach, the disease has been slowed in Liberia, Guinea, and Sierra Leone - at least temporarily. Can researchers develop vaccines quickly enough to prevent new outbreaks? Will Ebola move beyond West Africa?.

A river in Zaire -- The Ebola virus -- From outbreak to epidemic -- Protecting the protectors -- As the world watched -- Diagnosing the future.