that alter the schedule a little. I think it is convenient to get a bunch of vaccines at the same time, but it may not be the healthiest.
On shot day in bootcamp, I received an injection with a needle in each thigh, each arm, and one in the butt. Then received an injection with an air gun again in each arm. We had about just under a dozen of really big recruits. Almost half of them passed out. I don't know why it affected the big recruits the most.
I know they are not that aggressive on the civilian side, but delaying or trying not to get so many in one day may be beneficial for some.