MONROVIA, LIBERIA - AUGUST 15:  A mother and child stand atop their mattresses in a classroom now used as Ebola isolation ward on August 15, 2014 in Monrovia, Liberia. People suspected of contracting the Ebola virus are being brought by Liberian health workers to the center, a closed primary school originally built by USAID, while larger facililities are being constructed to house the surging number of patients. The Ebola epidemic has killed more than 1,000 people in four West African countries.  (Photo by John Moore/Getty Images)