Why this Ebola Outbreak is Out of Control

An Ebola outbreak in west Africa has claimed more than 600 lives. Mark Leon Goldberg speaks with Gregory Hartl of the World Health Organization who explains why the international community has had such difficultly containing this outbreak. Why is this outbreak different from previous ones? What are local and international health workers doing to contain the outbreak? Why is it spreading? And what needs to be done to put it under control? Have a listen!