Dr. Peter Walsh

A picture taken on July 24, 2014 shows staff of the Christian charity Samaritan's Purse putting on protective gear in the ELWA hospital in the Liberian capital Monrovia. (credit: ZOOM DOSSO/AFP/Getty Images)

Disease Expert Warns Terrorists Could Make Dirty Bomb Containing Ebola

A Cambridge University disease expert warns that terrorists could be able to build a dirty bomb containing the Ebola virus.