Also, a study shows that conflict during the outbreak dampened the effectiveness of vaccine efforts.
In other developments, top health officials from 10 African nations met in the DRC today and agreed on a joint preparedness framework.
In other Ebola developments today, three newly confirmed cases were reported in the outbreak region.
Today the Democratic Republic of the Congo (DRC) confirmed one new case of Ebola in the ongoing outbreak in North Kivu and Ituri provinces, but the World Health Organization (WHO) spotlighted some troubling signs in its weeks update.
Recent cases have been in a compact area with limited access and security problems.
Outbreak totals climb to 3,224 infections, including 2,150 fatal ones.
The Johnson & Johnson Ebola vaccine will be rolled out in November, officials say.
The WHO continues to say that progress in curtailing the outbreak must be balanced with caution.
Only 27 health zones are now reporting cases, down from 207 during the peak of the outbreak.
Also, tomorrow the WHO's Ebola emergency committee will meet to discuss the latest outbreak developments.
