I get the regular flu vaccine shot, plus I had all the school vaxxes available at the time as a kid.
And when I was in the Marines I had every vax they could shoot into me, even Bubonic Plague...............
[[even Bubonic Plague...............]]
Which is still around, as is pneumonic plague. A trapper caught a fox once out West, threw the fox in the back seat to bring it home- ended up loaning his car out Hat evening, and botH he and the loanee got the plague and died. there have been other Instances too