anaphylaxis

When people think of food allergies they think nuts because that is the more common one and more likely to cause anaphylaxis.

This sounds like a wheat allergy as Celiac disease does not present with anaphylaxis.

We try to exclude it from his diet and minimize it in the house, although he's shown no serious anaphylaxis from it.

Side effects like anaphylaxis - similar to if a person with a severe nut allergy ate a nut.

Anaphylactoid reactions can kill you just as well as anaphylaxis.

Worst case, you might have a massive immune response against the nanobots that causes a person to go into anaphylaxis.

Well you could determine if they died from anaphylaxis or other acute immunological response.

I had anaphylaxis after accidentally eating something with peanuts in it and went to the hospital.

Injections are followed by a 30 minute observation period as a caution against anaphylaxis.

It's an important distinction because drug toxicity can often be worked around by changing the dose, etc, while true allergy is highly dangerous as it can lead to anaphylaxis.

That's a "serious but rare" one-in-a-million type problem, but in the developed world the people who administer vaccines all know about anaphylaxis and will "just" fix it like my friend with a nut allergy would if he's given food with nuts in it by mistake.