Share 'Ebola: What you need to know'

The death toll from the Ebola outbreak in West Africa has now topped 900, 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 hardest hit by the outbreak: Liberia, Guinea and Sierra Leone. Amid fears that air travelers could spread Ebola to other countries, many are asking questions…