How Bad Is The Ebola Outbreak? The Worst Outbreak In History May Not Be As Bad As You Think [CHARTS]

The outbreak of Ebola Virus Disease (EVD) in West Africa that started in late March has spread across four countries (Guinea, Sierra Leone, Liberia and Nigeria) at a rate that has shocked public health officials. As of July 27, 729 people had been felled by the highly contagious virus, and on Thursday, the U.S. Centers for Disease Control issued its highest-level travel warning for the region.