I'm just a layman, but my understanding of vaccine development is that the timeline has little to do with how long it takes to actually research, make or distribute the thing (although that's certainly part of it).
The reason you need to wait so long is to prove its efficacy. By definition, you make a vaccine to give to everyone who is healthy and does not have the virus. So the absolute worst possible outcome would be to inject 95% of the population with a vaccine and discover in 6 months that it causes some horrible side effect.
The reason you need to wait so long is to prove its efficacy. By definition, you make a vaccine to give to everyone who is healthy and does not have the virus. So the absolute worst possible outcome would be to inject 95% of the population with a vaccine and discover in 6 months that it causes some horrible side effect.