Background The prevalence of peanut allergy in younger siblings of children with peanut
allergy has been reported between 7% and 8.5%, but the anaphylactic risk at the time of
introduction is currently unknown, which limits our ability to best counsel parents on this
issue. Objective To determine the risk of anaphylaxis and working parameters of allergy
testing in this context. Methods One hundred and fifty‐four peanut‐naïve younger siblings of
peanut‐allergic children underwent double‐blinded skin testing, followed by parent‐led …

METHODS. This was a retrospective case-control study of pediatric patients recruited from
November 2014 to February 2015. A standardized questionnaire was completed by the
parents and included information regarding past histories of allergic diseases, family history
of allergic diseases, time of introduction of nonregular (not used daily) CM formula, time of
introduction of regular (used daily) CM formula, feeding patterns in the first month of life and
reason for choosing those patterns, and timing of discontinuation of CM formula and reason …