A world-first Australian study has upended a decades-long approach to diagnosing and managing peanut allergies, allowing many babies to be cleared of the condition. width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport"/>Peanut allergy oral challenge diagnosis: Landmark study finds one in three Australian babies misdiagnosed. Peanut allergy is one of the most common and potentially serious food allergies in children.