From Bloomberg ... read any of the links on the Yahoo page. It's been in the news!!
A vaccine that could help protect medical workers as they fight Ebola in West Africa, even in the minutes after an accidental infection, may take at least a month to be available as global officials weigh its safety.
The sudden donation of as many as 1,000 doses of a vaccine that hasn’t been tested in humans is creating a conundrum because they could go to healthy people, rather than those already infected. Earlier, the World Health Organization decided that people in West Africa should be allowed access to promising experimental treatments or vaccines.