CNN The Lead With Jake Tapper December 8, 2021 21:08:00
Booster which we didn't end up needing. many have said this may just be a three-shot series, period. kind of like for hepatitis b. you get those shots earlier in life and then you're sort of protected for the majority of your life. some will need a booster decades down the road. that's one potential scenario that may play out. flu is another sort of example that people say, that's a yearly shot but the flu virus actually mutates a lot more than this virus. even though we talked a lot about variants, it's still a fraction of the number of variants that flu develops in any given year. so i don't...