I'd say this will be similar to the small pox or polio vaccine.
The doctor was also treated with a blood transfusion from a 14 year old which had survived.
RE: a 14 year old which had survived.
Is the boy now IMMUNE from the ebola virus?
One difficulty with testing the ebola vaccine compared to polio is that enough people were catching polio that you could do a double blind test giving some people vaccine and some a placebo and then compare infection rates between the groups. Since ebola is deadly, but not very common (even in Africa) it would be difficult to get a statistically meaningful test without actually intentionally infecting both the test and control groups to see if there is a difference in infection rates. Without that, ebola is going to go from the petri dish to general human use without a wide scale effectiveness test.