The FDA's definition of effective is: “There is reasonable assurance that a device is effective when it can be determined, based upon valid scientific evidence, that in a significant portion of the target population, the use of the device for its intended uses and conditions of use, when accompanied by adequate directions for use and warnings against unsafe use, will provide clinically significant results.”
http://web.stanford.edu/group/biodesign/regulatory/materials...
One was a doctor from Liberia who died.
2 others came to the US for treatment.
If the death rate of Ebola is 70%, that data is probably germane to the quality of the health care in those affected regions, which makes me wonder if the drug is really what helped the 2 who survived, or the increase in health care quality of the US.
It's just too early to tell, and the article that was linked sensationalizes something that we don't even know is the verifiable answer.