The considerations which led to the present investigation are briefly as follows: In looking over the work thus far accomplished with regard to the presence of the pneumococcus in the blood of pneumonia patients, one is struck by the contradictory results of the various investigators. When Prochaska28 33 finds the organism each time in a large number of cases, irrespective of the outcome of the disease, while men like Kühnau,16 in Germany, and James and Tuttle,18 in this country, find it rarely and only in fatal cases, the need of more research work on the subject is clearly to be seen. A second reason for this work which needs no emphasis is its value from a diagnostic point of view. If the pneumococcus can be recovered from the blood of pneumonias, as can the plasmodium of Laveran in malaria, diagnosis
KINSEY FC. EXAMINATION OF THE BLOOD OF PNEUMONIA PATIENTS FOR PNEUMOCOCCI.. JAMA. 1904;XLII(12):759–763. doi:10.1001/jama.1904.92490570013001c
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