No, the rush to create a vaccine coinicdes with the latest outbreak, which has 10 times (and counting) the number of infected as the next largest outbreak. More importantly, all previous outbreaks were local and contained reasonably easily. This is the first time Ebola is getting away from us; in previous cases we had the option of containing it and letting it run its course, now it looks like that may no longer be enough.
And before this outbreak happened, research into vaccines was already taking place. Of course the urgency is somewhat higher now, since we may be looking at a global epidemic. This has nothing to do with ohmygodanAMERICANgotinfected.