The practice of pediatrics . organism should be known in order to understand thevarious symptoms of the disease and its mode of propagation. It is a very short, small bacillus, or elongated coccus, found in grealnumbers in the bronchial and nasal secretions, especially at the earlystages of the disease. It grows readily on various culture media towhich whole blood and hemoglobin have been added after eighteento thirty hours growth at a temperature of 37° C. (° F.). It formssmall colonies represented by glistening points on the surface of themedia, which show little tendency to coalesce (Fi
The practice of pediatrics . organism should be known in order to understand thevarious symptoms of the disease and its mode of propagation. It is a very short, small bacillus, or elongated coccus, found in grealnumbers in the bronchial and nasal secretions, especially at the earlystages of the disease. It grows readily on various culture media towhich whole blood and hemoglobin have been added after eighteento thirty hours growth at a temperature of 37° C. (° F.). It formssmall colonies represented by glistening points on the surface of themedia, which show little tendency to coalesce (Figs. 102 and 103). Stained with a 10 per cent, carbol-fuchsin solution the bacilli arcseen as short, rather thick rods, varying greatly in dimensions andstaining qualities, slightly rounded at both ends, and arranged inmasses, or often in short threads. They apparently do not form spores,are killed at a temperature of 42° to ° C (107° to 113° F.) and below3° C. (20° to 27° F.), and very rapidly by drying. Fig. 102. Intiuenza bacilli. Smears taken from the nose and bronchial sputum at the early stageof the disease show the bacilli in enormous numbers, at first free andnot associated with other organisms to any great extent. Later they arewithin the pus cells, together with many cocci of the pyogenic variety,and still later not at alb They have been found repeatedly in sputumof patients suffering from chronic pulmonary conditions, notablytuberculosis, for weeks and months apparently in a latent condition. The influenza bacillus shows a greater tendency to associate withother organisms, especially pyogenic cocci, than any other disease,with the exception of measles and scarlet fever. INFLUENZA 467 At the onset the symptoms of an attack of grip are attributable tothe local action of the Pfeiffer bacillus and the toxins elaborated inits growth. Very soon, however, if the disease is protracted andcomplications occur, it is due to the action of the associated organismsand o
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