What is the fine-grained topic of the following text: The Learning Early About Peanuts (LEAP) study, which was the first randomized trial to study early allergen introduction as a preventive strategy, found that the introduction of infant-safe peanut-containing foods at 4-11 months of age significantly reduced the risk of developing peanut allergy in high-risk infants. Only return the topic.
Prevention of Peanut Allergy in Infants through Early Introduction of Peanut-Containing Foods