To me the main benefit of the vaccine is that it will calm the hysteria around Ebola. It's a nasty disease but the infection rate is fairly low. The media play a dangerous game crying wolf every month on what end up being relatively minor outbreaks. The list is now pretty long: Bird Flu, Swine Flu, Mad Cow disease, Ebola. Every time they bring back the spectre of the Spanish flu which wiped out a hundred million of people.

HIV kills about a million people a year. It might be old news but that's several orders of magnitude the scale of Ebola.