Professor Peter Piot, the Director of the London School of Hygiene and Tropical Medicine, speaks during an interview at his office in central London, England, on July 30, 2014. Professor Piot was one of the co-discoverers of the Ebola virus during its first outbreak in Zaire, in 1976. AFP PHOTO/Leon NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
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