Peanut allergy is an increasing public health concern in the United States. Children with peanut allergy may remain allergic for life, unlike children with more often outgrown allergies to milk or egg. Dr. Wesley Burks, professor and chief of the division of pediatric allergy and immunology at Duke University Medical Center, describes recent success with peanut immunotherapy in a few groups of children. Do these studies provide hope for all patients with peanut allergy, including adults? Dr. Lee Freedman hosts.