It will take "about six months" to get the upper hand on the Ebola outbreak in West Africa, the president of health organisation Medecins Sans Frontieres has said.
Joanne Liu told a news briefing in Geneva after a 10-day trip to the region: "If we don't stabilise Liberia, we will never stabilise the region.
"Over the next six months we should get the upper hand on the epidemic. This is my gut feeling," she said.
Liu added that the World Health Organisation "needs to take leadership" of the situation and said more experts were needed on the ground.
What is terrifying about Ebola is not the virus itself, it’s the west’s inaction in the face of an unprecedented epidemic.
World leaders meet in London to tackle the Ebola outbreak in west Africa which has so far claimed at least 3,000 lives.
More than 160 staff will work in a UK-funded facility in Sierra Leone which is due to open in October.