Recently completed study of Ebola outbreak affecting the west coast of Africa is said to have started with the burial of a traditional healer in who became infected with Ebola from patients in Guinean. Family members who participated in washing the body for burial became infected and then spread virus to others.
The Ebola virus has now reached a fifth country. Officials announced a Guinean student in Senegal was confirmed to have the disease. Meanwhile, a new report traces the deadly outbreak to a funeral in Guinea near the Sierra Leone border. Hari Sreenivasan talks to Stephen Gire of Harvard University about his on-the-ground experience in Sierra Leone and the latest on how the virus has spread.