The death toll from the worst Ebola outbreak in history has risen to at least 2,296 out of 4,293 cases in five West African countries, the World Health Organization said on Tuesday.
It said that 47% of the deaths and 49% of the total 4,269 cases had come in the 21 days leading up to 6 September.
The health agency warned that thousands more cases could occur in Liberia, which has had the most fatalities.
The outbreak, which was first reported in Guinea in March this year, has also spread to Sierra Leone and Nigeria.
In Nigeria, eight people have died out of 21 cases, while one case of Ebola has been confirmed in Senegal, the WHO said in its latest update.