An aid worker was evacuated to Europe after testing positive for the virus.
The WHO warns there are still too many deaths occurring in the community.
The high fatality rate, along with the large proportion of community deaths, highlights problems with timely case detection and healthcare access.
The largest-ever study on this topic systematically tested how 16 hypothetical social and environmental factors influence where outbreaks occur.
Only 85% of identified case contacts are under follow-up.
The vaccine targets Zaire strain of Ebola, but many hope there will be cross-protection against the Bundibugyo strain.
African officials say the data don’t confirm that the Ebola outbreak has peaked, as cases near 7,500 and deaths top 3,600.
1 in 60 adults in Fiji is HIV-positive.
The United Nations says there are small signs of progress.
This remains the second-largest Ebola outbreak in history.
