. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 488 Influenza quickly and must be transplanted every three or four days if they are to be kept alive. The organism is aerobic and scarcely grows at all where the supply of oxygen is not free. In bouillon a scant development occurs, small whitish particles appearing upon the surface, subsequently sinking to the bpttom and causing a "wooly" deposit there. The bacillus grows more luxu- riantly upon culture-media containing hemoglobin or blood, and
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 488 Influenza quickly and must be transplanted every three or four days if they are to be kept alive. The organism is aerobic and scarcely grows at all where the supply of oxygen is not free. In bouillon a scant development occurs, small whitish particles appearing upon the surface, subsequently sinking to the bpttom and causing a "wooly" deposit there. The bacillus grows more luxu- riantly upon culture-media containing hemoglobin or blood, and can be transferred from culture toculture many times before losing vitality. Vital Resistance.—^Its resisting powers are very restricted, as it speedily succumbs to drying, and is certainly killed by an exposure to. Fig. 174.—Bacillus of influenza; colonies on blood agar-agar. Low magnifying power (Pfeiffer). a temperature of 6o°C. for five minutes. It will not grow at any temperature below 28°C. Specificity.^—From the fact that the bacillus is found chiefly in cases of influenza, that it is present as long as the purulent secretions of the disease last, and then disappears, and that Pfeiffer was able to demonstrate its presence in all cases of uncomphcated influenza, it seems that his conclusion that the bacillus is specific is justifiable. It is also found in the secondary morbid processes following influenza, such as pneumonia, endocarditis, middle-ear disease, meningitis, etc. Horder* has cultivated it from the valvular vegetations of 2 cases of endocarditis following influenza. Davis t found the influenza bacillus in the respiratory passages of a large number of patients suffering from whooping-cough. * " of London," "Brit. Med. Jour.," April 22, 1905. t "Jour. Infectious Diseases," 1906, in, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora
Size: 1584px × 1576px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1919
