JAMA. 1932;99(20):1700-1701. doi:10.1001/jama.1932.02740720054021.
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Tuberculosis in Children  The Medical Research Council has published a report by Dr. John W. S. Blacklock which is an addition to our knowledge of the pathology and bacteriology of tuberculosis in children. He has produced new evidence of the paths of infection, based on a study of primary foci, with identification of the type of bacillus, whether bovine or human. The classic researches of Dr. A. Stanley Griffith of the scientific staff of the Medical Research Council have shown the numerical relations of these two forms. Bovine bacilli cause much abdominal tuberculosis, especially in children under 15, but only a third of the cases of tuberculous meningitis, even before the age of 15, are of bovine origin, and in bone and joint tuberculosis the human type preponderates, while pulmonary tuberculosis is almost invariably of human origin. However, several questions are unsettled. The relative importance of air-borne and food-borne infections


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