A nurse of the 'Doctors without Borders' ('Medecin sans frontieres') 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 -- the deadliest and most feared of which is Ebola. AFP PHOTO / SEYLLOU        (Photo credit should read SEYLLOU/AFP via Getty Images)