I think what you are implying above is that we can take a study or survey about autoimmune disease and use it to make conclusions about allergies. All I am sayi

I think what you are implying above is that we can take a study or survey about autoimmune disease and use it to make conclusions about allergies. All I am saying is that this does not logically follow, because the two are not the same and “allergy” is not a strict subclass of “autoimmune disease”. The specific details of the mechanism are not relevant to the logical point unless those details establish a subclass or identity relationship (which here they do not).