Years ago, when a homo died, the obituary would deliberately leave OUT the cause of death (AIDS, HIV, anal cancer, etc).
We're seeing the same force @ work now: incredulity, "cause unknown", head scratching & muddled obits.
You can BET it's the shot, or the booster.
With apologies to George Thorogood:
"Well I ain't been boosted since the night before last,
Mr. M.D. fill up my glass.
I wanna' get vaxxed so please listen to me,
One jab ain't enough, Doc, ya' better bring three.
I want to get vaxxed I wanna' make it real clear,
I want one Vax, one Booster . . . and another booster."