My husband recalls being given a whole host of vaccines in the navy and getting ill.
As you likely know, some vaccines are in a combo, like MMRV. The services were famous for hitting you all at once with mandatory shots for different deployment areas. If you assault your immune system that way, it’s easier to get sick. Spreading them out is much better.
I’m forced to get certain types for vendor credentials, especially in VA facilities. I always avoided it, until I got the flu, while traveling in 2014. My temp ran away, due to hydration. When I finally dragged myself to the ER, my temp was over 104. It took a full month to feel 100% again. Since then, I’ve gotten which shots I can and haven’t had much more than occasional congestion, since.