Читать книгу Epidemic Respiratory Disease. The pneumonias and other infections of the repiratory tract accompanying influenza and measles онлайн

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B. influenzæ was found in the sputum coughed from the deeper air passages in the majority of cases, being present in 80, or 76.2 per cent, of the 105 cases. In the 58 cases of lobar pneumonia it was found 41 times, or 70.7 per cent, in the 47 cases of bronchopneumonia 39 times, or 82.9 per cent. The abundance of B. influenzæ in the sputum varied greatly in different cases. Microscopic examination of stained sputum films and direct culture of the sputum on blood agar plates showed that in general it was more abundant in the mucopurulent sputum from cases of bronchopneumonia than in the mucoid rusty sputum from cases of lobar pneumonia. This was by no means an invariable rule, however, since in the former the bacilli were sometimes very few in number, in the latter quite abundant. Whether B. influenzæ shared in the production of the actual pneumonia in these cases is difficult to decide and cannot be stated on the basis of the bacteriologic and clinical observations which have been made.