No, but there had been a lot of wargaming for pandemics ( https://www.nature.com/articles/d41586-020-02277-6 ), preparation for pandemics ( https://www.statnews.com/2020/05/17/the-art-of-the-pandemic-... ), stark warnings that we were ripe for one from experts and notables ( https://www.businessinsider.com/people-who-seemingly-predict... ), and we even had CDC members inside and working with China in case of novel infectious agents appearing there ( https://www.reuters.com/article/us-health-coronavirus-china-... )

The prior administration actively ignored and undermined all of that (as referenced in some of those prior links, and https://www.politico.com/news/2020/03/25/trump-coronavirus-n... ).

The concern with a vaccine at the time was that it was going to be a mickey mouse one designed to show a win, rather than be effective, similar to Trump's claims about hydroxychloroquine and injecting disinfectants. But as people saw Moderna and Pfizer go through proper clinical trials, and be proved effective, even at the accelerated rate, and to be recommended by actual trusted medical professionals, they came on board. Well, obviously not everyone; now that it's been tested and shown to be safe it's Bill Gates' 5G mind control shot, despite Trump having received one.