When I was on the antibiotics (pre-Covid) , in addition to annual flu vaccine, my doc had me get the Shingrix vaccine and update my pneumonia and pertussis vaccines.

She said that with lowered defenses, it was important to build whatever immunity was possible with the vaccines. I felt like a pin cushion for several weeks as she insisted each be done a minimum of 7 days apart.

This year's flu vaccine barely gave me a sore shoulder! Now I have to wait until 90 days post-Covid to get my booster. I have it marked on the calendar.