Abstract

To the Editor: The present communication was inspired by the appearance in your editorial columns during the past six weeks of two comments on the etiology of whooping (The Journal, Nov. 26, 1932, p. 1866 and Dec. 17, p. 2115). Most of our knowledge of the bacteriology and serology of whooping has come from Europe, yet in your columns, widely read in Europe, such foreign data are not mentioned. Thorvald Madsen ( Boston M. & S. J. 192 :50 [Jan. 8] 1924) summarized the work of his staff at the Danish National Serum Institute in the Cutler Lecture given at Harvard University Medical School in 1924. He described the results obtained with the cough plate of Chievitz and Meyer ( Ann. de l'Inst. Pasteur 30 :503 [Oct.] 1916), which has now been used for sixteen years as a routine diagnostic procedure in Denmark. The acceptance of this procedure by the

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