article_snippet: Ebola is the largest ever for the Ebola virus .
article_snippet: The World Health Organization estimated Thursday that the Ebola virus has killed more than 10,000 people, mostly in the West African nations of Guinea, Liberia and Sierra Leone.
article_snippet: Ebola is the largest ever for the disease, however, as deaths have slowed dramatically in recent months, the Ebola virus appears stubbornly entrenched in parts of Guinea and Sierra Leone.