article_snippet.sent: The others were exposed to Ebola in Sierra Leone in March, but none developed the Ebola virus.
article_snippet.sent: They all had contact with a colleague who was diagnosed with the Ebola virus and is being treated at the National Institutes of Health in Bethesda, Maryland.
article_snippet.sent: More than 10,000 people have died in a West African epidemic of Ebola that dates to December 2013, according to the World Health Organization.
article_snippet.sent: Almost all the deaths have been in Guinea, Liberia and Sierra Leone.
article_snippet.sent: Ebola is spread by direct contact with the bodily fluids of an infected person.
highlights_snippet.sent: 17 Americans were exposed to the Ebola virus while in Sierra Leone in March .
  
highlights_snippet.sent: Another person was diagnosed with the Ebola virus and taken to hospital in Maryland .
  