[GAVI] Freetown/Sierra Leone -- Sierra Leone becomes the first country, among those most severely affected ten years ago by the West Africa Ebola outbreak, to launch nationwide preventive Ebola vaccination, targeting 20,000 frontline workers who will receive a single dose of Ebola vaccine The campaign comes one decade after the 2014 Ebola PHEIC - the deadliest Ebola outbreak in history - during which Sierra Leone was the country hardest-hit, including the loss of 7% of its health care workforce With the virus presenting an ongoing