Don't hang all your hope on a vaccine... they don't have that great of a track record.
Better than no vaccine... but they don't stop everyone from getting whatever the vaccine is for.
This years Flu vaccine is apparently only showing a 45 % "overall" effective rate according to cdc
(Only 37% against H1N1 strains)
That's better than 0%... but certainly not the Holy Grail.

https://www.cdc.gov/mmwr/volumes/69/wr/mm6907a1.htm?s_cid=mm6907a1_w

Going forward, treatments for corona are still going to be more important than a vaccine.
Because at 40-50% effective rate, a vaccine is still going to be a hell of a lot less effective than everyone staying in their house for 3 months. And we see how well that's going.