Does risk for anaphylaxis vary with type of allergen from immunotherapy? example: pollen, stings, mites, cat, food, etc..

Complex: Risk of anaphylaxis from immunotherapy depends on many factors: identifying the allergens causing the symptoms, severity of symptoms, whether well controlled prior to start of therapy, choosing the right allergens and right concentrations, assessment at each visit prior to administration of therapy, and observation for at least 30 minutes. Very rare in the hands of a competent allergist, good luck