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September 4, 1909

The Pneumococcus-Carrier a Possible Danger

JAMA. 1909;LIII(10):809. doi:10.1001/jama.1909.02550100055010

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To the Editor:  —"An Epidemic of Empyema," reported in The Journal, Aug. 14, 1909, p. 529, leads me to ask if one case developed in advance of the others, and if the author, or some other person had, within a few hours following a visit to the home of the first pneumonia patient, come in contact with the persons who afterward developed pleuritis?It is interesting to know how extremely susceptible some persons are to pulmonary infection, especially the old and the young and those having a tendency to such troubles.I conducted a series of experiments on the possibility of the conveyance of infection in the laboratory of the late Professor Miller of Berlin in which the saliva of a visiting physician was found to contain the elements of the diseases of the various cases, seen by him, more than an hour after leaving them. Among these were pneumonia

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