[throwup238]

> Yet where are all the people dying of this?

Based on this metastudy titled Epidemiology of anaphylaxis in Europe, they found the prognosis was:

> Case fatality rates were noted in three studies at 0.000002%, 0.00009%, and 0.0001%.

That's among all cases of anaphylaxis, so the answer is "they are almost nonexistent". It's not even a rounding error. Something on the order of a few dozen people per year for a country the size of the UK and from what I can tell, most of those are due to administration of IV medication where the allergy was previously unknown and much more severe.

[1] https://onlinelibrary.wiley.com/doi/epdf/10.1111/all.12272