What you need to know about the Ebola outbreak

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One of the world's most contagious viruses spins out of control in West Africa and two Americans have now been infected. Infectious Disease Specialist Dr. Kent Sepkowitz, a deputy physician in chief at Memorial Sloan Kettering Cancer Center, talks to Ronan Farrow about the Ebola outbreak in Africa and tells you what you need to know to survive a global pandemic.