During COVID people were losing their minds about one in a million chance of complications caused by vaccination. I did some research (but actually), and found that that’s comparable to the rate of complications for any use of an injected drug or even saline. Just piercing the skin with a tiny needle is a “medical procedure” with a non-zero risk, especially in the elderly and the immunocompromised.
I had a couple of MRIs recently and got curious about gadolinium contrast. Again, there is a non-zero risk, but if you eliminate the cohort with reduced kidney function and those getting regular repeated MRIs, the risk is comparable to the use of an I/V, which is how it’s administered.
The only thing that upset me was that the staff didn’t ask me verbally about kidney issues to double-check. They also didn’t remind me to drink a bunch of water to flush it out of my system. (Some articles recommend administering a diuretic.)
For that matter they didn’t check me properly form metal fragments either!
Similarly, I’ve had vaccinations administered where I had to remind the doctor to clean the area with alcohol first and to tap the syringe to get rid of the bubbles.
Bad procedures are more dangerous than the drugs being administered!