STUDIES ON EXPERIMENTAL PNEUMONIA

Abstract
1. Lobar pneumonia has been consistently produced in normal monkeys by the intratracheal injection of minute amounts of pneumococcus culture. 2. The disease produced has been shown to be clinically identical with lobar pneumonia in man. 3. Lobar pneumonia has been produced in the monkey in one instance by experimental contact infection. 4. Normal monkeys inoculated in the nose and throat with large amounts of pneumococcus culture have failed to develop lobar pneumonia though carrying the organism in their mouths for at least a month. They have likewise failed to show any evidence of upper respiratory tract infection. 5. Monkeys inoculated subcutaneously or intravenously with pneumococcus culture have in no instance developed pneumonia, but have either died of pneumococcus septicemia or recovered without localization of the infection in the lungs.

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