Doctors Without Borders (DWB) have heavily criticised the international community's response to the growing Ebola crisis in west Africa, describing it as "lethally inadequate".
DWB or Medicine Sans Frontiere has called on countries more capable of dealing with large outbreaks to send medical staff.
During a speech to the UN, DWB President Dr. Joanne Liu warned volunteers would not be able to contain the outbreak on their own.
She said: "Six months into the worst Ebola epidemic in history, the world is losing the battle to contain it. Leaders are failing to come to grips with this transnational threat.
"The WHO announcement on August 8 that the epidemic constituted a 'public health emergency of international concern' has not led to decisive action, and states have essentially joined a global coalition of inaction."
A Swansea doctor who took leave to treat Ebola patients in Africa, is back on the wards after three weeks in isolation.
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In a Facebook Q&A on the Ebola virus for ITV News, an expert discussed risks, potential vaccines and what would happen if it came to the UK.