Sierra Leone Ebola

A security guard, center, stands outside the Connaught Hospital, where a leading doctor died from Ebola on Wednesday, in Freetown, Sierra Leone, Friday, Aug. 15, 2014. The Ebola outbreak that has killed more than 1,000 people in West Africa could last another six months, Doctors Without Borders said Friday, and a medical worker acknowledged that the true death toll is unknown. (AP Photo/Michael Duff)

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