Sarah Obama, left, and her translator, Mama Sarah Obama Foundation Executive Director Debra Akello, spoke at the United Nations on Wednesday. Bebeto Matthews/AP hide caption

itoggle caption Bebeto Matthews/AP

Dr. Komba Songu M'Briwah, left, talks on the phone while staff members disinfect offices at the Hastings Ebola Treatment Center in Freetown. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Baby Sesay, a traditional healer in Sierra Leone, treated a child who later died, apparently of Ebola, and then became sick herself and went to a care center. As this photo was taken, her body seized up and she nearly collapsed. David P Gilkey/NPR hide caption

itoggle caption David P Gilkey/NPR

"Parents enroll their kids here because of our child-friendly toilets," says Eunice, the co-founder of a Kenyan school with latrines designed specially for kids. Frederic Courbet/WSUP/Panos hide caption

itoggle caption Frederic Courbet/WSUP/Panos

Nurses Bridget Mulrooney and Kelly Suter volunteered to work for the International Medical Corps at an Ebola treatment unit in Liberia. IMC is reporting a drop-off in recruits this fall. Stuart J. Sia/International Medical Corps hide caption

itoggle caption Stuart J. Sia/International Medical Corps

A pregnant woman waits for help in a cab outside John F. Kennedy hospital in Monrovia, Liberia, in September. Then closed, the hospital's maternity ward reopened in October and is now one of the few places in Monrovia delivering babies. The Washington Post/Getty Images hide caption

itoggle caption The Washington Post/Getty Images

One of the four non-profits to benefit from the Google matching campaign is Doctors Without Borders, which held an Ebola training program last week in Amsterdam. Jasper Juinen/Getty Images hide caption

itoggle caption Jasper Juinen/Getty Images

Health workers in protective suits transport Dr. Martin Salia, a surgeon working in Sierra Leone who has been diagnosed with Ebola, from a jet that brought him from Sierra Leone to a waiting ambulance in Omaha, Neb., on Saturday. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP