Nearly 7,000 people have now died from Ebola in west Africa, with the latest numbers from the World Health Organization counting over 1,200 more deaths than in a toll given on Wednesday.

Data published by the UN's health body shows that 16,169 people had been infected with Ebola and that 6,928 of them had died in the three countries at the centre of the outbreak -Sierra Leone, Guinea and Liberia.

The new toll likely includes previously unreported cases.

Meanwhile Mali has no more confirmed cases of Ebola after the last patient known to be suffering from the virus was cured.

Mali has registered eight cases of Ebola - seven of them confirmed and one probable - after the virus spread from neighbouring Guinea, the WHO said this week.

Six of these people infected have died, the WHO said.

A further 285 people who came into contact with them are being monitored but have shown no sign of the disease.

"At this moment, there are no cases of infection (in Mali)," President Ibrahim Boubacar Keita said speaking at a summit in Senegal.