USAID

It's the last day on the job for Rajiv Shah, who at age 36 became the youngest-ever head of USAID. A key figure in the U.S. Ebola response, Shah has his critics, but he's proud of his record.

Doctors and nurses are desperately needed to fight the Ebola outbreak in West Africa. They're finally starting to volunteer in larger numbers, but getting them deployed is a slow, complicated process.

Rajiv Shah, the head of the U.S. Agency for International Development, gives an update on the construction of new hospitals — and the outlook for Ebola — in afflicted parts of West Africa.