Vaccines take multiple years to develop normally. How much faster can you get for vaccine development? I certainly did not expect there to be more than one, or

Vaccines take multiple years to develop normally. How much faster can you get for vaccine development? I certainly did not expect there to be more than one, or any, good options for vaccination by the beginning of this year. The trials also helped make it clear that the Pfizer–BionTech and Moderna vaccines were safe, something that will help convince people to take the vaccine in the long term.