[Effect of different kinds of feeding on morbidity during the first year of life].

It is studied the influence of the different kinds of feeding on the morbidity in the first year. Four groups are made depending on whether they have had maternal feeding for 3 months or over 3 months (n = 46), artificial feeding at the beginning (n = 63), mixed feeding for 3 months or over 3 months (n = 84) and those who had introduced cow milk before the 6 months (n = 48). The children with maternal feeding and mixed feeding had less respiratory infections than those who had been fed with artificial feeding (p greater than 0.05 and p less than 0.02 respectively). The results are compared with those given by other authors and it is suggested that in civilized societies there is a smaller evidence of the protection of the human milk against infections.