The WHO says Sierra Leone is likely to soon surpass Liberia's outbreak numbers.
Details from WHO on cases linked to an ill imam from Guinea who sought treatment in Mali.
The small biotech and the drug giant announced an agreement today.
Ban Ki-moon and other world leaders urged nations to continue aid for West Africa's Ebola outbreak region.
A cluster pushes Mali's total from 1 case reported a few weeks earlier to 6 illnesses, 5 fatal.
Although activity appears to be slowing elsewhere, it's still rising in Sierra Leone.
Quicker, simpler diagnostic tests could go a long way in helping slow the outbreak, the WHO said.
The authors expand on a previous commentary by clarifying the possible role that aerosol transmission might play in Ebola transmission and offer new language for discussing disease transmission.
It is the 2nd Ebola death on US soil; meanwhile, the country will start screening travelers from Mali.
The high mobility of West Africa's population worries some observers.
