Eli5 : how comes people are allergic to fish & nuts but you rarely hear about people allergic to chicken or pork?

Question

Eli5 : how comes people are allergic to fish & nuts but you rarely hear about people allergic to chicken or pork?

In: 4

Answer 1

Because chicken allergies are very rare. And I am referring to a reaction similar to shellfish with swollen throat, difficulty breathing, etc.

Source: me, have chicken allergy. Have met one other person in my life.