Employees of a petroleum company in Liberia help to curb Ebola's spread via a public health awareness campaign Monday. West Africa is facing its first Ebola outbreak, so questions abound.
Usman (right), 7 months, and Abdullah (left), 18 months, are held by their mothers while they wait to receive the polio vaccine at the Jalozai refugee camp near Peshawar, Pakistan.
Daniel Berehulak/Getty Images
Medical workers treat Ebola patients at the Eternal Love Winning Africa hospital in Monrovia, Liberia. Three workers at the hospital, including Dr. Kent Brantly (left), have tested positive for Ebola.
Courtesy of Samaritan's Purse