Since covid 19 is new. No one really knows how much time a booster can give or if it'll be similar to flu when each year there will be a need to a shot relevant

Since covid 19 is new. No one really knows how much time a booster can give or if it'll be similar to flu when each year there will be a need to a shot relevant for this year variants. What so far seems reliable enough is that the vaccination itself reduce chance for complications when you do get it.