[Captain Walker]

There’s a reason they tell you to wait two weeks between shots.

Do the people administering the shots ask this apparently important question? ("Sir/Ma'am, when did you get your first shot?)

[eastexsteve]

Do the people administering the shots ask this apparently important question? ("Sir/Ma'am, when did you get your first shot?)

It's on the card they give you with your first shot. Of course, you have to show them the card.