Bamako - Mali's health minister says the west African country has started trials of an Ebola vaccine on scientific researchers.
"It's purely a scientific step. The trials are on volunteer researchers," said Ousmane Kone.
Mali has no Ebola cases but it borders Guinea, where the outbreak began.
The trials in Bamako are being supervised by the vaccine research centre of the medical school of the University of Maryland in the United States and Mali's health ministry, Kone said.
Trials of the vaccine started in September on 10 US volunteers and 60 in Britain.
The vaccine is being developed by the British drug company GlaxoSmithKline and the US National Institute of Health.
The WHO said 4 033 people died from Ebola up to 8 October out of a total of 8 399 registered cases in seven countries.