Hospitalizations among infants and toddlers (age, <3 years) by type of allergic reaction in the United States from 2006 to 2015. Overall AAR includes codes for anaphylaxis, FIA, and FAAR. Anaphylaxis includes FIA and non–food-related anaphylaxis. Overall FAAR includes FIA and other food-related codes. AAR, acute allergic reaction; FAAR, food-induced acute allergic reaction; FIA, food-induced anaphylaxis.