Orally applied bacterial lysate in infants at risk for atopy does not prevent atopic dermatitis, allergic rhinitis, asthma or allergic sensitization at school age: Follow‐up of a randomized trial

Background The allergy preventive effects of gut immune modulation by bacterial compounds are still not fully understood. Objective We sought to evaluate the effect of bacterial lysate applied orally from the second until seventh months of life on the prevalence of allergic diseases at school age. Methods In a randomized, placebo‐controlled trial, 606 newborns with at least one allergic parent received orally a bacterial lysate consisting of...