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Arch Intern Med (Chic). 1920;26(4):510. doi:10.1001/archinte.1920.00100040133012.
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This is a well illustrated description and summary of the morbid changes largely mentioned in the current literature on influenza. Much of the text is devoted to the gross and minute pathology of the respiratory tract both in the acute and in the subacute or chronic stages, incidental lesions in other parts of the body being presented briefly.

In a group of ninety-five patients there were two with activation of a chronic pulmonary tuberculosis by influenza.

The bacteriology of influenza is reviewed broadly. All the reports mention more or less constantly the pneumococcus group, streptococci and the Pfeiffer bacillus, occurring alone, together, or with other less frequently found organisms.

There is a comparison between the respiratory lesions in influenza and those initiated experimentally in animals by the inhalation of poisonous gases. Although an interesting similarity is noted, the changes have been observed in experimental animals rather than in human beings,


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