My concern is that the problem really isnt getting a vaccine, sad as it may sound.
One of my friends work for a UK/Swedish pharmaceutical company which should remain unnamed

and he told me they were approached by a large foundation/charity to create a medicine for one of the more nasty parasites in Africa (my apologies for not being able to remember which parasite).
They started doing some investigation and they realised there were already good medicine available and when they went back to the charity and asked why they didnt use the existing medicine. The answer back was that the around £1.50 for a course of the medicine was too expensive and it need to get under 50 pence to be possible to reach the masses....
At which time they had to drop it as they could never produce a new medicine at that price...
£1.50 to effectively save someone's life was to expensive....how sad.....
Of course this is slightly different as it only cured it so the person could get reinfected and need a new dose.