In all recent publications on infant-feeding the superiority of breast-milk over all artificial foods is more than ever emphasized; and the crusade for the encouragement of breast-feeding continues. The cause of this undoubted superiority is still an unsolved problem. One especial phase of the subject which is greatly discussed is the far greater immunity to infection shown by breast-fed infants. This is emphasized by Kleinschmidt,1 Czerny,2 Langstein,3 Meyer and others. They have shown that all methods of artificial feeding, however successful in other respects, give no immunity against infectious processes. What is the essential cause of the high immunity conferred by breast-milk? The passage of immune bodies from mother to infant in the mother's milk has long been considered a possibility. Czerny2 believes that this has not been proved; but believes the cause lies rather in the high fat content of breast-milk. Langstein3 advises
MEIGS G. REVIEW OF THE LITERATURE ON THE FEEDING AND GASTRO-INTESTINAL DISEASES OF INFANTS, FOR THE YEAR 1913-1914. Am J Dis Child. 1914;VIII(1):58–94. doi:10.1001/archpedi.1914.04300010063003
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