Quote Originally Posted by blue matt View Post
they can tweak it though I said above I saw a interview with one of Pfizers people ( chief scientist I think ) he said that they could tweak the vaccine as needed and it would be on the production line within hours ( this was early this year though, things could have changed )
"Tweaking" mRNA vaccines is "simple" and quick. However, testing them is not.

http://www.cdc.gov/coronavirus/2019-...ines/mrna.html