The world is on the verge of an effective Ebola vaccine, the World Health Organization declared Friday. A vaccine being developed by Merck and NewLink Genetics was shown to be 100 percent effective in preventing Ebola, according to an interim look from a late-stage study in Guinea.
The results need to be confirmed, but WHO Director-General Margaret Chan called them "an extremely promising development."
Does this mean Merck and NewLink are going to make big bucks? Not necessarily. And Merck says that wasn't its aim in the first place.