I’ve got 5 doctors LOL.
They all said they got the vax.
My cancer doc (who’s 50ish and runs marathons) got COVID in March 2020. He said it was like the worst hangover ever that lasts a week and told me to get the vax as soon as I could.
Running marathons and having a strong immune system are different.
My wife and I both had covid.
2.5 days of mild symptoms.
I e had far worse colds
Your cancer doc must have skipped the course in Doctor School where they teach them about "antibodies"...