Differentiation ofCorynebacterium diphtheriae of theMitis type found in diphtheria and ozaena |
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| Authors: | Vladimir Bezjak |
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| Affiliation: | (1) Institute of Microbiology, School of Medicine, University of Zagreb, Zagreb, Yugoslavia;(2) Central Institute of Hygiene, Zagreb, Yugoslavia |
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| Abstract: | Summary The purpose of this study was to find out whether there existed any difference betweenC. diphtheriae typemitis always present in the nasal cavity of ozaena patients (the so-calledC. belfanti) andC. diphtheriae of themitis type found in diphtheria patients or carriers. Studying in details all the morphological, cultural and biochemical properties, a difference was found to exist in the reduction of nitrates. This test was investigated in 55 strains ofC. belfanti and 45 strains of themitis type ofC. diphtheriae. All the strains ofC. belfanti yielded negative results in the reduction of nitrates, while all strains ofC. diphtheriae typemitis reduced nitrates within 24 hours. The value of this observation was shorty discussed. |
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