Almost all the deaths and cases have been recorded in the three west African countries worst hit by the outbreak: Sierra Leone, Liberia and Guinea, WHO said on Wednesday.
Those apart, six have died in Mali, one in the United States and eight in Nigeria, which was declared Ebola-free in October.
Spain and Senegal, which have both been declared free of Ebola, had one case each, but no deaths.
Sierra Leone, which has overtaken Liberia as the country with the most infections, counted 9,446 cases and 2,758 deaths on December 28.
Liberia, long the hardest-hit country, has seen a clear decrease in transmission over the past month.
As of December 28, the country had recorded 8,018 cases and 3,423 deaths.
In Guinea, where the outbreak started a year ago, 2,707 Ebola cases and 1,708 deaths were recorded.
Ebola, one of the deadliest viruses known to man, is spread only through direct contact with the bodily fluids of an infected person showing symptoms such as fever or vomiting.
People caring for the sick or handling the bodies of people infected with Ebola are especially exposed.
As of December 28, a total of 678 healthcare workers were known to have contracted the virus, and 382 of them had died, WHO said on Wednesday.

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