A family member, older (80), received a flu shot a few months ago. And has in the past. I personally stay a million miles away from them because I do not trust them as far as I can spit. That is being polite.
I attended physicals for the family member too and things have been checking out very well.
A week ago the family member was diagnosed with lung cancer.
Could there remotely be a connection? "C" happen that fast? Of course there are a slew of possibilities, especially with the age thing. But, am just wondering....