David Nabarro: On a mission to eradicate Ebola cases to zero

Since the Ebola outbreak began last year, the U.N. says 21,000 people have been infected and 8,500 have died. And while the number of new cases has declined severely, the focus now is to move towards a world where there are 0 cases. Dr. David Nabarro is the UN's special envoy for Ebola to tell us more.
A medical worker of the John Fitzgerald Kennedy Hospital in Monrovia disinfects a wall. (Dominique Faget/AFP/Getty Images)

While Ebola cases have dwindled there is still a lot of work to do according to UN Special Envoy for Ebola, Dr. David Nabarro. In fact it's actually harder to move from from 10 to zero than from 100 to 10.  He tells us why the closer to zero we get, the harder it is.  
 

This segment was produced by Kristin Nelson and Ines Colabrese.