>>13411044It may not have, that's certainly a possibility.
To give you an example, I get the flu-shot every year (including last year), at the recommendation of said transplant team. The idea, as they've reiterated many times, is that I may not develop the antibodies that one is meant to from the shot - but the possibility of having even a little more protection is worth it; given how vulnerable I am to everyday layman ailments.
Having said that, I haven't had a cold or the flu in years, which I think is because of some of the habits I've developed as a consequence of being immunocompromised (washing hands frequently, hand-sanitizer, not touching frequented surfaces directly, avoiding touching my face, etc.)
Unrelated but an interesting anecdote that came to mind. I was a teenager when I first received the graft, and my parents were forcing me to wear a mask for hospital visits. One of the old nurse-practitioners literally called them out for it, talking about how doctors wearing it is for the patients' protection, and it doesn't work inversely. Also how they reserve N95s for only the most severely immunocompromised patients - like those with bone marrow transplants and those undergoing chemotherapy. Funny enough, another nurse-practitioner, at one point, said something along the lines of "you can't tell everyone else to wear a mask, so just wear one yourself." Kek, if only she knew.