Earlier quoted context omitted.
Are you an immunologist? I'm not, but it's my layman's understanding that most candidates are likely to make it to stage 3, and that most will fail in stage 3. As far as I can tell, the number of candidates in stage 3 trials is not a strong indicator of the likelihood of a successful vaccine being developed.
No but Dr. Fauci, along with other scientists working on the vaccine (ex. Dr. Sarah Gilbert), have repeatedly said we will likely get a vaccine by 2021, and have millions of doses rolling out by mid 2021.
No, Dr. Fauci has said that if the vaccines currently in testing, which are being rushed to production before trials are complete, pass trials, then it is likely that there will be tens of millions of doses available in Spring 2021 and enough for everyone who wants them by the end of 2021.
But he's also acknowledged, at the same time, that that's an “if” and instead all of that vaccine could end up getting dumped if the trials fail.