PBS NewsHour | Clip | Feeding infants peanuts could reverse dramatic allergy rise

Since 1997, the estimated percentage of children in the U.S. who are allergic to peanuts has quadrupled. A new study challenges conventional wisdom, suggesting that introducing peanuts into infants’ diets could prevent allergies later on. Jeffrey Brown learns more from Anthony Fauci of the National Institute of Allergy and Infectious Diseases.