@merpreb, Dr. Poland answered your question about the COVID vaccine and what protocols we will need to continue to follow and for how long
– A vaccine milestone https://connect.mayoclinic.org/page/podcasts/newsfeed-post/a-vaccine-milestone/

I paraphrase: We will likely need to continue masking, keeping physical distance and washing hands diligently until late summer of 2021, depending on the flow of vaccine doses. Even with 2 doses of the vaccine, I would still encourage people to wear a mask until we know more about the length of protection of the vaccine."

See the complete and helpful response from Dr. Poland starting at 8:51.