AdvertisementWhy Is Guinea's Ebola Outbreak So Unusual?03:57Download AudioResumeApril 01, 2014Jason BeaubienfacebookEmailA nurse of the 'Doctors without Borders' medical aid organisation examines a patient in the in-take area at a center for victims of the Ebola virus in Guekedou, on April 1, 2014. The viral haemorrhagic fever epidemic raging in Guinea is caused by several viruses which have similar symptoms â the deadliest and most feared of which is Ebola. (AFP/Getty Images)