The charity Medecins Sans Frontieres has said it will host clinical trials of new treatments for Ebola at three centres in West Africa.
Medical staff will use two drugs from a World Health Organization shortlist, as well as blood and plasma therapy also endorsed by the WHO.
The aim of the trials is to keep the patients alive during the critical first 14 days of the illness.
The news comes as the number of people to die from Ebola rose to 5,160.
