im not implying a vaccine center is a back alley drug market, im saying you pulled up and stuck your arm out the window for someone you dont know who doesnt know your medical history
but more importantly you can just call your doctor
"hey doc, what should I do to stay safe in regards to COVID?"
Doc: "Vaccine should be fine. let me know how you feel after the first day and make sure they monitor you for up to 15 minutes after the shot"