PBS Newshour: Faced with challenging Ebola outbreak, medical workers use education to combat fear

The Ebola outbreak in West Africa has killed more than 670 people and spread to four countries. Among those now infected are two American aid workers and the lead Ebola doctor in Sierra Leone. Gwen Ifill interviews Dr. Estrella Lasry of Doctors Without Borders about factors, including fear and hostility, that are hindering efforts to stop the outbreak.