MONROVIA, LIBERIA - AUGUST 15:  A corpse lies in a classroom now used as Ebola ward on August 15, 2014 in Monrovia, Liberia. People suspected of contracting the Ebola virus are being sent by Liberian health workers to the center, a closed primary school originally built by USAID. The Ebola epidemic has killed more than 1,000 people in four West African countries.  (Photo by John Moore/Getty Images)