In a scientific triumph that will change the way the world fights a terrifying killer, an experimental Ebola vaccine tested on humans in the waning days of the West African epidemic has been shown to provide 100 percent protection against the lethal disease.
Health officers have conducted checkups in Sierra Leon. The place is said to have the second highest death toll caused by Ebola.
WHO admitted making a counting error in Liberia's deaths and has lowered the toll from 6,928 to 5,987.
