Are you aware that no particular vaccine is infallible due to variable factors influencing them?
However the majority of those v accinated are helped by them, and most do not contract the diseas for which they are intended.
Just as when a person is treated by any medication for the specified use, they still may not respond positively.
Having indicated the above, perhaps you will understand that the beest approach to said treatments are, how did you say it? Right, common sense. Get the vaccine.
Right. Get shot up with untested dope and hope it works. But if it doesnt? (which it doesnt) No worries. Uncle Joe has his boys cooking up new brew 24/7. I bet this one will work. Yeah. Common sense. By the look of things, it isnt that common.