So where's the data? How many cases? Actual anaphylaxis will kill you in a matter of a few minutes and is triggered by an antigen. No idea where you got this string of problems but it's like reading the alerts on any med: possible side effects: Death, Suicide etc. What "drugs" were given to this person? We don't even know, so the side affects are meaningless.
There was a preexisting co-morbidity or even a a nosocomial infection, which is what it sounds like, but not CoVid.