Also, new data show that 1 in 4 new patients in North Kivu, DR Congo, are children.
The patient is a close family member of the Kenyan national who died from Ebola earlier this month.
At least 4,381 people have died in the outbreak that started May 15.
The country recorded its first Ebola case on October 5.
NIH funded a record number of early-stage investigators but fewer awards overall.
The most recent from the DRC shows 8,665 confirmed and 4,178 deaths, with a case-fatality rate of 48%.
Officials are seeking fellow passengers on the flight from Kampala, Uganda, to Nairobi, Kenya.
The WHO warns there are still too many deaths occurring in the community.
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.
