A health worker attends to a girl at the medical centre of Doctor Without Borders (Medecin sans Frontiere (MSF) where people infected with the Ebola virus are treated in Monrovia on September 26, 2014. Thousands of doses of experimental Ebola vaccines could be ready for use in African countries badly hit by the deadly virus early next year, the World Health Organization said. AFP PHOTO / PASCAL GUYOT (Photo by Pascal GUYOT / AFP) (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
