British Ebola survivor William Pooley listens as he attends the "Defeating Ebola: Sierra Leone" conference in central London, on October 2, 2014. Britain hosted an international conference on Thursday to help organise the fight against Ebola in its former colony Sierra Leone, as a charity warned that five people were becoming infected every hour in the West African nation. AFP PHOTO/LEON NEAL/POOL        (Photo credit should read LEON NEAL/AFP/Getty Images)