From my understanding anaphylactic shock occurs in those who have severe allergic reactions.
A few years ago I was removing honeysuckle vines from my mother's backyard fence. Then, I felt this sharp, burning, stabbing pain along my right ankle. I look down and see probably a couple of dozen ground hornets buzzing around my leg. Took off running and they kept following me for a couple hundred yards and stung me maybe 10 more times on my back.
When I got far enough away, I could still feel stinging around my ankles. There were about 6 of them with their jaws digging into my skin. Finally smashed those bastards and was safe but damn that shit scared the hell out of me.
The next day I came back with 2 cans of spray, some gas, a lighter, and a shovel. Sprayed the nest down, dug it up, then lit the goddamn thing on fire. I was mad as hell after that bullshit.
Educate yourself; your understanding is wrong.
Those with severe allergies are of course more predisposed to anaphylactic reactions, but extreme envenomation such as, I dunno, being stung by a mcmillion bees such as this poor person was, shall precipitate an extreme reaction in anyone.