For communities hard hit by Ebola, vaccines can't come soon enough

Scientists are working at breakneck speed to develop a vaccine that targets the Bundibugyo strain of the Ebola virus. Dr. Armand Sprecher, an epidemiologist with Doctors Without Borders, just returned from Democratic Republic of Congo's worst-affected province. He talks with The World's Host Carolyn Beeler about potential vaccines in the pipeline and why local populations and front-line workers need more protection now.