To determine the effect of supplementation of a hydrolyzed formula with probiotic bacteria on clinical and immunological parameters in infants with AD with and without CMA~To determine the effect of supplementation of a hydrolyzed formula with probiotic bacteria on clinical and immunological reactivity to cow' milk challenge in infants with AD with CMA~To compare the effectiveness of different strains of probiotic bacteria in improving clinical and immunological outcome in these infants
To study the effect of supplementation of a hydrolyzed formula with probiotic bacteria on clinical and immunological parameters in infants with AD with and without CMA and to compare effectiveness of different strains of probiotics.