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ARTICLE |

THE ETIOLOGY OF PERTUSSIS AND ITS SERUM TREATMENT.

JAMA. 1900;XXXV(2):99-100. doi:10.1001/jama.1900.02460280035014.
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ABSTRACT

In the recently issued and splendid volume, entitled "Contributions from the William Pepper Laboratory of Clinical Medicine," occurs an article by Joseph Walsh on the etiology of whooping-cough. He notes that the number of organisms discovered in this disease is quite remarkable—a new organism has been found for every alternate year of the last two decades. Protozoa, cocci, and bacilli have been described. Two bacilli have received especial notice: The one described by Afanassiev, whose finding was confirmed by Koplik of New York, and the bacillus of Czaplewski-Hensel. Walsh studied twelve cases and made one autopsy, isolating the Czaplewski-Hensel bacillus from the sputum seven times and finding the same organism in smears from the sputum of nine cases and from the trachea at the postmortem. On carefully reviewing the characteristics of this bacillus, Walsh is forced to the belief that it is a so-called pseudo-diphtheria bacillus. It is not necessary

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