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JAMA. 1923;81(7):590-591. doi:10.1001/jama.1923.02650070074020.
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Fifth National Tuberculosis Congress  The fifth National Tuberculosis Congress was organized by the National Committee of Defense Against Tuberculosis and was held at Strasbourg under the chairmanship of Dr. Holtzman, president of the Antituberculosis Association of Alsace and Lorraine. Its program consisted of biologic, clinical and social problems:

SECONDARY INFECTIONS IN RELATION TO VACCINOTHERAPY  Prof. F. Bezançon and Dr. M. Chevalley of Paris endeavored to show that the rôle of secondary infections, as evidenced by the sputum of tuberculous persons, has been distorted by errors in technic. During the course of expectoration, the sputum takes up bronchial mucus and saliva, both contaminated, and to this is added the multiplication that takes place in the sputum cup. Examination of sputum is valueless unless it is fresh (not more than four hours old) and has been thoroughly rinsed with physiologic sodium chlorid solution. Direct examination of stained smears is more exact than


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