The death toll from the Ebola outbreak in West Africa has surpassed 700, according to the World Health Organization. It's the deadliest outbreak ever recorded. U.S. health officials are warning Americans not to travel to the three countries hit by the outbreak: Liberia, Guinea and Sierra Leone.
Amid fears that air travelers could spread Ebola to other countries, many are asking questions about the disease and how it is transmitted. Here's what you need to know about Ebola. The information comes from WHO and the U.S. Centers for Disease Control and Prevention.
