this exactly , i'll take my chances feeling crappy for a few days if it means not breathing through a corrugated hose for a week or two , or longerGood protection "against serious disease".
Not the same thing as good protection against infection.
While it would be nice to have a booster shot that gives good protection against infection, such a thing is not available yet.
In the absence of that, I'll settle for something that improves my odds of staying out of the hospital. I can deal with being under the weather for a couple of days, should it come to that.