I (38) got it, my MIL, and my parents and grandparents all got it. I had the worst symptoms. Apparently it tends to affect younger people harder.

First shot just had a super sore arm for a day. Second shot, I developed chills and hot flashes with a low grade fever that evening which lasted all night. And the arm was even sorer.

Chances are great they will be fine. Aside from the excellent 5G connection I get from the nanobots, I'm doing great!