Skin testing with ultra-heat-treated (UHT) cow's milk in children with cow's milk allergy.

Background: A large proportion of cow's milk (CM)-allergic children are able to tolerate extensively heated forms of CM such as baked goods. Little is known about whether ultra-heat-treated (UHT) forms of cow's milk are immunologically similar to extensively heated cow's milk and therefore may be tolerated by these children.

Objective: To determine whether skin test wheal size using UHT CM was significantly different from other forms of CM and CM extracts.

Repeat oral food challenges in peanut and tree nut allergic children with a history of mild/moderate reactions.

Background: In peanut and tree nut allergic children a history of anaphylaxis is associated with subsequent severe reactions.

Objective: We aimed to prospectively rechallenge peanut and tree nut allergic children with a history of mild/moderate reactions to assess their allergy over time.

Methods: In this cohort study peanut and tree nut allergic children with a history of mild/moderate reactions during a controlled oral challenge were invited to have a follow-up oral challenge to the same food at least 1 year later.