How did the Ebola epidemic in Africa get out of control so fast?

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PBS – The spread of the most recent strain of the Ebola virus across parts of West Africa has highlighted not just the lethality of the disease but also the strains on the existing medical infrastructures there. For further insight, Stephen Morse, a professor of epidemiology at Columbia University and Estrella Lasry, a tropical medical advisor at Doctors Without Borders, join Hari Sreenivasan.