Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Mycobacterium confluentis
Introduction
Mycobacterium confluentis is a non-pathogenic bacterium of the oral cavity.
Description
Description
Gram-positive, nonmotile, acid-fast coccobacillus (0.5-0.8µm x 0.7-1.7µm), does not form spores, capsules or aerial hyphae.
Physiology.
- Rapid growth within 2 to 4 days on Löwenstein-Jensen media at 22°C, 31°C, 37°C and 41°C (optimum growth between 31°C and 37°C).
- In vitro susceptibility to isoniazid, ethambutol and streptomycin.
Differential characteristics.
- Differentiation from other thermotolerant mycobacteria by its inability to grow at temperatures of more than 41°C.
- Separation from other rapidly growing mycobacteria by its susceptibility to antituberculotic drugs.
- Differentiated from the phenotypic closely related M. thermoresistibile by its inability to grow at 52°C.
Type Strain
Type Strain
First isolated from sputum, Koblenz, Germany. strain 1389/90 = ATCC 49920 = CIP 105510 = DSM 44017 = JCM 13671.
References
References
- Kirschner et al. 1992. Mycobacterium confluentis sp. nov. Int. J. Syst. Bacteriol., 42, 257-262.
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