The current Ebola virus outbreak in West Africa has killed more than 4,000 people, but it started with one person: a 2-year-old child who died on Dec. 6, 2013.
The current Ebola virus outbreak in West Africa has killed more than 4,000 people, but it started with one person: a 2-year-old child who died on Dec. 6, 2013.
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